The striated muscle groups which move the LARYNX as a whole or its parts, such as altering tension of the VOCAL CORDS, or size of the slit (RIMA GLOTTIDIS).
A tubular organ of VOICE production. It is located in the anterior neck, superior to the TRACHEA and inferior to the tongue and HYOID BONE.
Branches of the VAGUS NERVE. The superior laryngeal nerves originate near the nodose ganglion and separate into external branches, which supply motor fibers to the cricothyroid muscles, and internal branches, which carry sensory fibers. The RECURRENT LARYNGEAL NERVE originates more caudally and carries efferents to all muscles of the larynx except the cricothyroid. The laryngeal nerves and their various branches also carry sensory and autonomic fibers to the laryngeal, pharyngeal, tracheal, and cardiac regions.
Difficulty and/or pain in PHONATION or speaking.
Branches of the vagus (tenth cranial) nerve. The recurrent laryngeal nerves originate more caudally than the superior laryngeal nerves and follow different paths on the right and left sides. They carry efferents to all muscles of the larynx except the cricothyroid and carry sensory and autonomic fibers to the laryngeal, pharyngeal, tracheal, and cardiac regions.
A disorder in which the adductor muscles of the VOCAL CORDS exhibit increased activity leading to laryngeal spasm. Laryngismus causes closure of the VOCAL FOLDS and airflow obstruction during inspiration.
A pair of cone-shaped elastic mucous membrane projecting from the laryngeal wall and forming a narrow slit between them. Each contains a thickened free edge (vocal ligament) extending from the THYROID CARTILAGE to the ARYTENOID CARTILAGE, and a VOCAL MUSCLE that shortens or relaxes the vocal cord to control sound production.
The process of producing vocal sounds by means of VOCAL CORDS vibrating in an expiratory blast of air.
Biological actions and events that support the functions of the RESPIRATORY SYSTEM.
The larger subunits of MYOSINS. The heavy chains have a molecular weight of about 230 kDa and each heavy chain is usually associated with a dissimilar pair of MYOSIN LIGHT CHAINS. The heavy chains possess actin-binding and ATPase activity.
Contractile tissue that produces movement in animals.
A process leading to shortening and/or development of tension in muscle tissue. Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments.
Recording of the changes in electric potential of muscle by means of surface or needle electrodes.
Communication through a system of conventional vocal symbols.
Characteristic properties and processes of the NERVOUS SYSTEM as a whole or with reference to the peripheral or the CENTRAL NERVOUS SYSTEM.
The protein constituents of muscle, the major ones being ACTINS and MYOSINS. More than a dozen accessory proteins exist including TROPONIN; TROPOMYOSIN; and DYSTROPHIN.
Unstriated and unstriped muscle, one of the muscles of the internal organs, blood vessels, hair follicles, etc. Contractile elements are elongated, usually spindle-shaped cells with centrally located nuclei. Smooth muscle fibers are bound together into sheets or bundles by reticular fibers and frequently elastic nets are also abundant. (From Stedman, 25th ed)
A subtype of striated muscle, attached by TENDONS to the SKELETON. Skeletal muscles are innervated and their movement can be consciously controlled. They are also called voluntary muscles.
Compounds that interact with ANDROGEN RECEPTORS in target tissues to bring about the effects similar to those of TESTOSTERONE. Depending on the target tissues, androgenic effects can be on SEX DIFFERENTIATION; male reproductive organs, SPERMATOGENESIS; secondary male SEX CHARACTERISTICS; LIBIDO; development of muscle mass, strength, and power.
Those characteristics that distinguish one SEX from the other. The primary sex characteristics are the OVARIES and TESTES and their related hormones. Secondary sex characteristics are those which are masculine or feminine but not directly related to reproduction.
Large, multinucleate single cells, either cylindrical or prismatic in shape, that form the basic unit of SKELETAL MUSCLE. They consist of MYOFIBRILS enclosed within and attached to the SARCOLEMMA. They are derived from the fusion of skeletal myoblasts (MYOBLASTS, SKELETAL) into a syncytium, followed by differentiation.
The nonstriated involuntary muscle tissue of blood vessels.
The commonest and widest ranging species of the clawed "frog" (Xenopus) in Africa. This species is used extensively in research. There is now a significant population in California derived from escaped laboratory animals.
A potent androgenic metabolite of TESTOSTERONE. It is produced by the action of the enzyme 3-OXO-5-ALPHA-STEROID 4-DEHYDROGENASE.
Developmental events leading to the formation of adult muscular system, which includes differentiation of the various types of muscle cell precursors, migration of myoblasts, activation of myogenesis and development of muscle anchorage.
Congenital or acquired paralysis of one or both VOCAL CORDS. This condition is caused by defects in the CENTRAL NERVOUS SYSTEM, the VAGUS NERVE and branches of LARYNGEAL NERVES. Common symptoms are VOICE DISORDERS including HOARSENESS or APHONIA.
Restoration, reconstruction, or improvement of a defective or damaged LARYNX.
The largest cartilage of the larynx consisting of two laminae fusing anteriorly at an acute angle in the midline of the neck. The point of fusion forms a subcutaneous projection known as the Adam's apple.
That component of SPEECH which gives the primary distinction to a given speaker's VOICE when pitch and loudness are excluded. It involves both phonatory and resonatory characteristics. Some of the descriptions of voice quality are harshness, breathiness and nasality.
Derangement in size and number of muscle fibers occurring with aging, reduction in blood supply, or following immobilization, prolonged weightlessness, malnutrition, and particularly in denervation.
The resection or removal of the innervation of a muscle or muscle tissue.
One of a pair of small pyramidal cartilages that articulate with the lamina of the CRICOID CARTILAGE. The corresponding VOCAL LIGAMENT and several muscles are attached to it.
A heterogeneous group of inherited MYOPATHIES, characterized by wasting and weakness of the SKELETAL MUSCLE. They are categorized by the sites of MUSCLE WEAKNESS; AGE OF ONSET; and INHERITANCE PATTERNS.
A heterogenous group of inherited muscular dystrophy that can be autosomal dominant or autosomal recessive. There are many forms (called LGMDs) involving genes encoding muscle membrane proteins such as the sarcoglycan (SARCOGLYCANS) complex that interacts with DYSTROPHIN. The disease is characterized by progressing wasting and weakness of the proximal muscles of arms and legs around the HIPS and SHOULDERS (the pelvic and shoulder girdles).
Large, noncollagenous glycoprotein with antigenic properties. It is localized in the basement membrane lamina lucida and functions to bind epithelial cells to the basement membrane. Evidence suggests that the protein plays a role in tumor invasion.
A quaternary skeletal muscle relaxant usually used in the form of its bromide, chloride, or iodide. It is a depolarizing relaxant, acting in about 30 seconds and with a duration of effect averaging three to five minutes. Succinylcholine is used in surgical, anesthetic, and other procedures in which a brief period of muscle relaxation is called for.
Drugs that interrupt transmission at the skeletal neuromuscular junction without causing depolarization of the motor end plate. They prevent acetylcholine from triggering muscle contraction and are used as muscle relaxants during electroshock treatments, in convulsive states, and as anesthesia adjuvants.
The intentional interruption of transmission at the NEUROMUSCULAR JUNCTION by external agents, usually neuromuscular blocking agents. It is distinguished from NERVE BLOCK in which nerve conduction (NEURAL CONDUCTION) is interrupted rather than neuromuscular transmission. Neuromuscular blockade is commonly used to produce MUSCLE RELAXATION as an adjunct to anesthesia during surgery and other medical procedures. It is also often used as an experimental manipulation in basic research. It is not strictly speaking anesthesia but is grouped here with anesthetic techniques. The failure of neuromuscular transmission as a result of pathological processes is not included here.
Androstanes and androstane derivatives which are substituted in any position with one or more hydroxyl groups.
The first digit on the radial side of the hand which in humans lies opposite the other four.
It is a form of protection provided by law. In the United States this protection is granted to authors of original works of authorship, including literary, dramatic, musical, artistic, and certain other intellectual works. This protection is available to both published and unpublished works. (from Circular of the United States Copyright Office, 6/30/2008)
A diverse superfamily of proteins that function as translocating proteins. They share the common characteristics of being able to bind ACTINS and hydrolyze MgATP. Myosins generally consist of heavy chains which are involved in locomotion, and light chains which are involved in regulation. Within the structure of myosin heavy chain are three domains: the head, the neck and the tail. The head region of the heavy chain contains the actin binding domain and MgATPase domain which provides energy for locomotion. The neck region is involved in binding the light-chains. The tail region provides the anchoring point that maintains the position of the heavy chain. The superfamily of myosins is organized into structural classes based upon the type and arrangement of the subunits they contain.
An order of flightless birds comprising the ostriches, which naturally inhabit open, low rainfall areas of Africa.
The edible portions of any animal used for food including domestic mammals (the major ones being cattle, swine, and sheep) along with poultry, fish, shellfish, and game.
An order of large, long-necked, long-legged, flightless birds, found in South America. Known as rheas, they are sometimes called American ostriches, though they are in a separate order from true OSTRICHES.
Physiological changes that occur in bodies after death.
Places where animals are slaughtered and dressed for market.
Articles of food which are derived by a process of manufacture from any portion of carcasses of any animal used for food (e.g., head cheese, sausage, scrapple).
Postmortem examination of the body.
The musculofibrous partition that separates the THORACIC CAVITY from the ABDOMINAL CAVITY. Contraction of the diaphragm increases the volume of the thoracic cavity aiding INHALATION.
A stage of sleep characterized by rapid movements of the eye and low voltage fast pattern EEG. It is usually associated with dreaming.

Myotube heterogeneity in developing chick craniofacial skeletal muscles. (1/197)

Avian skeletal muscles consist of myotubes that can be categorized according to contraction and fatigue properties, which are based largely on the types of myosins and metabolic enzymes present in the cells. Most mature muscles in the head are mixed, but they display a variety of ratios and distributions of fast and slow muscle cells. We examine the development of all head muscles in chick and quail embryos, using immunohistochemical assays that distinguish between fast and slow myosin heavy chain (MyHC) isoforms. Some muscles exhibit the mature spatial organization from the onset of primary myotube differentiation (e.g., jaw adductor complex). Many other muscles undergo substantial transformation during the transition from primary to secondary myogenesis, becoming mixed after having started as exclusively slow (e.g., oculorotatory, neck muscles) or fast (e.g., mandibular depressor) myotube populations. A few muscles are comprised exclusively of fast myotubes throughout their development and in the adult (e.g., the quail quadratus and pyramidalis muscles, chick stylohyoideus muscles). Most developing quail and chick head muscles exhibit identical fiber type composition; exceptions include the genioglossal (chick: initially slow, quail: mixed), quadratus and pyramidalis (chick: mixed, quail: fast), and stylohyoid (chick: fast, quail: mixed). The great diversity of spatial and temporal scenarios during myogenesis of head muscles exceeds that observed in the limbs and trunk, and these observations, coupled with the results of precursor mapping studies, make it unlikely that a lineage based model, in which individual myoblasts are restricted to fast or slow fates, is in operation. More likely, spatiotemporal patterning of muscle fiber types is coupled with the interactions that direct the movements of muscle precursors and subsequent segregation of individual muscles from common myogenic condensations. In the head, most of these events are facilitated by connective tissue precursors derived from the neural crest. Whether these influences act upon uncommitted, or biased but not restricted, myogenic mesenchymal cells remains to be tested.  (+info)

Atrophy of the posterior cricoarytenoid muscle as an indicator of recurrent laryngeal nerve palsy. (2/197)

BACKGROUND AND PURPOSE: The posterior cricoarytenoid (PCA) muscle is one of the intrinsic muscles of the larynx innervated by the recurrent laryngeal nerve. As such, recurrent laryngeal nerve palsy should not only result in paralysis of the true vocal cord or thyroarytenoid muscle but also in a similar change in the PCA muscle. The ability of CT and MR imaging to depict denervation atrophy in the PCA muscle in patients with recurrent laryngeal nerve palsy was evaluated. METHODS: Two investigators reviewed the CT and/or MR studies of 20 patients with a clinical history of vocal cord paralysis. The appearance of the PCA muscle was given a rating of 0, 1, 2, 3, or 4, with 0 being definitely normal and 4 being definitely abnormal or atrophic. Each study was also reviewed for the presence or absence of other features of vocal cord paralysis: thyroarytenoid muscle atrophy, anteromedial deviation of the arytenoid cartilage, an enlarged piriform sinus and laryngeal ventricle, and a paramedian cord. RESULTS: Atrophy of the PCA muscle was shown unequivocally in 65% of the cases and was most likely present in an additional 20%. The frequency with which other features of vocal cord paralysis were seen was as follows: thyroarytenoid atrophy, 95%; anteromedial deviation of the arytenoid cartilage, 70%; enlarged piriform sinus, 100%; enlarged laryngeal ventricle, 90%; and a paramedian cord, 100%. CONCLUSION: Atrophy of the PCA muscle may be commonly documented on CT and MR studies in patients with recurrent laryngeal nerve palsy and vocal cord paralysis, and therefore should be part of the constellation of imaging features of vocal cord paralysis. This finding is particularly useful when other imaging findings of vocal cord paralysis are absent or equivocal.  (+info)

Electromyographic activity from human laryngeal, pharyngeal, and submental muscles during swallowing. (3/197)

The durations and temporal relationships of electromyographic activity from the submental complex, superior pharyngeal constrictor, cricopharyngeus, thyroarytenoid, and interarytenoid muscles were examined during swallowing of saliva and of 5- and 10-ml water boluses. Bipolar, hooked-wire electrodes were inserted into all muscles except for the submental complex, which was studied with bipolar surface electrodes. Eight healthy, normal, subjects produced five swallows of each of three bolus volumes for a total of 120 swallows. The total duration of electromyographic activity during the pharyngeal stage of the swallow did not alter with bolus condition; however, specific muscles did show a volume-dependent change in electromyograph duration and time of firing. Submental muscle activity was longest for saliva swallows. The interarytenoid muscle showed a significant difference in duration between the saliva and 10-ml water bolus. Finally, the interval between the onset of laryngeal muscle activity (thyroarytenoid, interarytenoid) and of pharyngeal muscle firing patterns (superior pharyngeal constrictor onset, cricopharyngeus offset) decreased as bolus volume increased. The pattern of muscle activity associated with the swallow showed a high level of intrasubject agreement; the presence of somewhat different patterns among subjects indicated a degree of population variance.  (+info)

Discharge characteristics of laryngeal single motor units during phonation in young and older adults and in persons with parkinson disease. (4/197)

Discharge characteristics of laryngeal single motor units during phonation in young and older adults, and in persons with Parkinson disease. The rate and variability of the firing of single motor units in the laryngeal muscles of young and older nondisordered humans and people with idiopathic Parkinson disease (IPD) were determined during steady phonation and other laryngeal behaviors. Typical firing rates during phonation were approximately 24 s/s. The highest rate observed, during a cough, was 50 s/s. Decreases in the rate and increases in the variability of motor unit firing were observed in the thyroarytenoid muscle of older and IPD male subjects but not female subjects. These gender-specific age-related changes may relate to differential effects of aging on the male and female voice characteristics. The range and typical firing rates of laryngeal motor units were similar to those reported for other human skeletal muscles, so we conclude that human laryngeal muscles are probably no faster, in terms of their contraction speed, than other human skeletal muscles. Interspike interval (ISI) variability during steady phonation was quite low, however, with average CV of approximately 10%, with a range of 5 to 30%. These values appear to be lower than typical values of the CV of firing reported in three studies of limb muscles of humans. We suggest therefore that low ISI variability is a special although not unique property of laryngeal muscles compared with other muscles of the body. This conceivably could be the result of less synaptic "noise" in the laryngeal motoneurons, perhaps as a result of suppression of local reflex inputs to these motoneurons during phonation.  (+info)

Assessing the laryngeal cough reflex and the risk of developing pneumonia after stroke: an interhospital comparison. (5/197)

BACKGROUND AND PURPOSE: We sought to evaluate the efficacy of testing the laryngeal cough reflex in identifying pneumonia risk in acute stroke patients. METHODS: We performed a prospective study of 400 consecutive acute stroke patients examined using the reflex cough test (RCT) compared with 204 consecutive acute stroke patients from a sister facility examined without using the RCT. The binary end point for the study outcome was the development of pneumonia. RESULTS: Of the 400 patients examined with the RCT, 5 developed pneumonia. Of the 204 patients examined without the RCT, 27 developed pneumonia (P<0.001). Three of the 27 patients died in the rehabilitation hospital of respiratory failure secondary to pneumonia. Seven others were transferred to the emergency department with acute respiratory distress. Power analysis for this comparison was 0.99. There were no other significant differences between the 2 groups. CONCLUSIONS: A normal RCT after an acute stroke indicates a neurologically intact laryngeal cough reflex, a protected airway, and a low risk for developing aspiration pneumonia with oral feeding. An abnormal RCT indicates risk of an unprotected airway and an increased incidence of aspiration pneumonia. Alternate feeding strategies and preventive measures are necessary with an abnormal RCT. Clinical treatment algorithm and prescription of food, fluids, and medications are discussed on the basis of RCT results.  (+info)

Differential effects of clonidine on upper airway abductor and adductor muscle activity in awake goats. (6/197)

The purpose of this study was to determine the extent to which alpha(2)-adrenoceptor (alpha(2)-AR) pathways affect the central motor output to upper airway muscles that regulate airflow. Electromyogram (EMG) measurements were made from posterior cricoarytenoid (PCA), cricothyroid (CT), thyroarytenoid (TA), and middle (MPC) and inferior (IPC) pharyngeal constrictor muscles in awake standing goats. Systemic administration of the alpha(2)-AR agonist clonidine induced a highly dysrhythmic pattern of ventilation in all animals that was characterized by alternating episodes of tachypnea and slow irregular breathing patterns, including prolonged and variable expiratory time intervals. Periods of apnea were commonly observed. Dysrhythmic ventilatory patterns induced by clonidine were associated with differential recruitment of upper airway muscles. alpha(2)-AR stimulation preferentially decreased the activity of the PCA, CT, and IPC muscles while increasing TA and MPC EMG activities. Clonidine-induced apneas were associated with continuous tonic activation of laryngeal (TA) and pharyngeal (MPC) adductors, leading to airway closure and arterial oxygen desaturation. Tonic activation of the TA and MPC muscles was interrupted only during the first inspiratory efforts after central apnea. Laryngeal abductor, diaphragm, and transversus abdominis EMG activities were completely silenced during apneic events. Ventilatory and EMG effects were reversed by selective alpha(2)-AR blockade with SKF-86466. The results demonstrate that alpha(2)-AR pathways are important modulators of central respiratory motor outputs to the upper airway muscles.  (+info)

Cisatracurium neuromuscular block at the adductor pollicis and the laryngeal adductor muscles in humans. (7/197)

We have compared the dose-response relationship (n = 30) and time course of neuromuscular block (n = 20) of cisatracurium at the laryngeal adductor and the adductor pollicis muscles. ED95 values for cisatracurium were 66.8 (95% confidence interval 61.3-72.3) micrograms kg-1 at the larynx and 45.2 (42.1-48.3) micrograms kg-1 at the adductor pollicis muscle (P < 0.0001). After administration of cisatracurium 0.1 mg kg-1, onset time was 2.7 (2.2-3.2) min at the larynx and 3.9 (3.0-4.8) min at the adductor pollicis (P < 0.0001). Time to 95% recovery of the first twitch of the TOF was 26.9 (20.1-33.7) min and 45.6 (39.7-51.5) min, respectively (P < 0.0001). We found that the laryngeal adductors were more resistant to the action of cisatracurium than the adductor pollicis muscle, but onset and recovery were faster at the larynx.  (+info)

Modulation of laryngeal responses to superior laryngeal nerve stimulation by volitional swallowing in awake humans. (8/197)

Laryngeal sensori-motor closure reflexes are important for the protection of the airway and prevent the entry of foreign substances into the trachea and lungs. The purpose of this study was to determine how such reflexes might be modulated during volitional swallowing in awake humans, when persons are at risk of entry of food or liquids into the airway. The frequency and the amplitude of laryngeal adductor responses evoked by electrical stimulation of the internal branch of the superior laryngeal nerve (ISLN) were studied during different phases of volitional swallowing. Subjects swallowed water on command while electrical stimuli were presented to the ISLN at various intervals from 500 ms to 5 s following the command. Laryngeal adductor responses to unilateral ISLN stimulation were recorded bilaterally in the thyroarytenoid muscles using hooked wire electrodes. Early ipsilateral R1 responses occurred at 17 ms, and later bilateral R2 began around 65 ms. The muscle responses to stimuli occurring during expiration without swallowing were quantified as control trials. Responses to stimulation presented before swallowing, during the swallow, within 3 s after swallowing, and between 3 and 5 s after a swallow were measured. The frequency and amplitude of three responses (ipsilateral R1 and bilateral R2) relative to the control responses were compared across the different phases relative to the occurrence of swallowing. Results demonstrated that a reduction occurred in both the frequency and amplitude of the later bilateral R2 laryngeal responses to electrical stimulation for up to 3 s after swallowing (P = 0.005). The amplitude and frequency of ipsilateral R1 laryngeal responses, however, did not show a significant main effect following the swallow (P = 0.28), although there was a significant time by measure interaction (P = 0.006) related to reduced R1 response amplitude up to 3 s after swallowing (P = 0.021). Therefore, the more rapid and shorter unilateral R1 responses continued to provide some, albeit reduced, laryngeal protective functions after swallowing, whereas the later bilateral R2 responses were suppressed both in occurrence and amplitude for up to 3 s after swallowing. The results suggest that R2 laryngeal adductor responses are suppressed following swallowing when residues may remain in the laryngeal vestibule putting persons at increased risk for the entry of foreign substances into the airway.  (+info)

Intrinsic laryngeal muscle investigations, especially those of the interarytenoid (IA) muscle, have already been primarily teleologically based. phonation. The presence of spindles demonstrates differences in motor control as compared to the thyroarytenoid and posterior cricoarytenoid muscles. Further, extrafusal fiber characteristics implicate IA muscle involvement in muscle tension dysphonia and adductor spasmodic dysphonia. Given the unique physiologic characteristics of the human IA muscle, further research into the role of the IA muscle in voice disorders is warranted. Keywords: fiber type, interarytenoid muscle, laryngeal muscle, muscle fatigue, muscle spindle, voice disorder INTRODUCTION Intrinsic laryngeal muscles are commonly considered to perform basic general jobs as either vocal collapse adductors or abductors; nevertheless, current research indicates that classification may be deceptive.1 Although each one of the intrinsic laryngeal muscle groups has primary jobs in laryngeal ...
TY - JOUR. T1 - Myosin heavy chain composition in human laryngeal muscles. AU - Shiotani, Akihiro. AU - Westra, William H.. AU - Flint, Paul W.. N1 - Copyright: Copyright 2007 Elsevier B.V., All rights reserved.. PY - 1999/9. Y1 - 1999/9. N2 - Objectives: Myosin heavy chain (MHC) composition of human thyroarytenoid (TA), lateral cricoarytenoid (LCA), interarytenoid (LA), vocalis, posterior cricoarytenoid (PCA), and cricothyroid muscles were examined using sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and Western bolt techniques. The presence of superfast MHC was also assessed using antibodies directed against the extraocular MHC. Study Design: MHC protein was analyzed using fresh human laryngeal muscles. Methods: Laryngeal muscles excised from cadavers were processed for SDS-PAGE. The composition of MHC isoforms was determined by densitometry. Western blot was carried out to identify specific bands. Results: MHC types IIA and lib are the predominant MHC components in human ...
article{e4f339e0-02cb-4b8b-b889-689f330ddff3, abstract = {Deficiency of laminin alpha2 chain leads to a severe form of congenital muscular dystrophy (MDC1A). Here, we analyzed whether the intrinsic laryngeal muscles (ILM) are spared in the dy(3K)/dy(3K) mouse model of complete laminin alpha2 chain absence. No muscle degeneration was evident; expression of various laminin chains was similar to that of limb muscles, and sustained integrin alpha7B expression was noted in laminin alpha2 chain-deficient ILM. We conclude that ILM are spared in MDC1A. Muscle Nerve 39: 91-94, 2009.}, author = {Häger, Mattias and Durbeej-Hjalt, Madeleine}, issn = {0148-639X}, language = {eng}, number = {1}, pages = {91--94}, publisher = {John Wiley & Sons}, series = {Muscle and Nerve}, title = {Intrinsic laryngeal muscles are spared from degeneration in the dy(3k)/dy(3k) mouse model of congenital muscular dystrophy type 1A.}, url = {http://dx.doi.org/10.1002/mus.21209}, volume = {39}, year = {2009 ...
Experiments were conducted in adult dogs to determine the respiratory activity of laryngeal muscles during wakefulness and sleep. We studied the EMG activity of three laryngeal muscles in five trained dogs, two of which were completely intact, and three of which had a previously-formed side-hole tracheal stoma. Pairs of electrodes were implanted chronically into the posterior cricoarytenoid muscle (PCA), a laryngeal dilator, cricothyroid (CT), and thyroarytenoid (TA), a laryngeal adductor. EMG electrodes were also inserted into the costal portion of the diaphragm. In wakefulness (W), slow wave sleep (SWS) and rapid eye movement (REM) sleep the EMGs of the PCA and CT muscles increased in intensity during diaphragm activation, with varying levels of basal activity during expiration. However, the greatest levels of inspiratory activity in PCA and CT during sleep were found in REM sleep, usually in the absence of augmented diaphragm EMG activity. This laryngeal muscle activity was associated with laryngeal
Intrinsic laryngeal muscle investigations, especially those of the interarytenoid (IA) muscle, have already been primarily teleologically based. phonation. The presence of spindles demonstrates differences in motor control as compared to the thyroarytenoid and posterior cricoarytenoid muscles. Further, extrafusal fiber characteristics implicate IA muscle involvement in muscle tension dysphonia and adductor spasmodic dysphonia. Given the unique physiologic characteristics of the human IA muscle, further research into the role of the IA muscle in voice disorders is warranted. Keywords: fiber type, interarytenoid muscle, laryngeal muscle, muscle fatigue, muscle spindle, voice disorder INTRODUCTION Intrinsic laryngeal muscles are commonly considered to perform basic general jobs as either vocal collapse adductors or abductors; nevertheless, current research indicates that classification may be deceptive.1 Although each one of the intrinsic laryngeal muscle groups has primary jobs in laryngeal ...
The lateral cricoarytenoid muscle is a muscle in the throat that adducts and medially rotates the arytenoid cartilage. This action adducts the vocal folds, increasing the pitch of the voice and closing the rima glottidis.
In human intrinsic laryngeal muscles, most of NMJs consisted of one motor endplate and more than one terminal axons. Some muscle fibers possessed more than one NMJ, but this didnt relate to multiple innervation of laryngeal muscles immediately. The NMJ of type 2 muscle fiber had greater motor endplate and much terminal branches than type 1 muscle fiber. Among specialized intrinsic laryngeal muscles, motor endplate length and terminal branching points did not differ. Neuromuscular junction morphology could not account of functional differentiation in intrinsic laryngeal muscles. No significant differences were found between irradiated and nonirradiated groups. This suggested that NMJs were resistant to irradiation. Terminal branching points and segmented motor endplates increased significantly in the ALS specimens, whereas mortor endplate length did not differ. This indicated that nerve sprouting occured in intrinsic laryngeal muscles ...
PubMed journal article: Laryngeal muscle activity in unilateral vocal fold paralysis patients using electromyography and coronal reconstructed images. Download Prime PubMed App to iPhone, iPad, or Android
Laryngeal Electromyography (LEMG) is a diagnostic test commonly used in patients with vocal fold movement disorder The aim of this study is to describe LEMG in patients with vocalfold immobility. A total of 55 dysphonic patients with vocal fold immobility diagnosed by laryngeal endoscopy were grouped according to probable clinical cause: 1) unknown; 2) traumatic; or 3) tumoral compression. They were submitted to LEMG by percutaneous insertion of concentric needle electrode. LEMG was conclusive in all patients and showed a majority with peripheral nerve injury. LEMG diagnosed peripheral nerve damage in 25 group 1, 12 group 2, and 11 group 3 patients. LEMG was normal in 4 patients, suggesting cricoarytenoid joint fixation. Central nervous system disorders was suggested in 2 and myopathic pattern in 1. As the major cause of vocal fold immobility is peripheral nerve damage, LEMG is an important test to confirm diagnosis ...
Selected References. Lyon, M.J. and R.N. Payman (2000) Comparison of the vascular innervation of the rat cochlea and vestibular system. Hearing Res. 141:189-198.. Lyon, M.J. (2000) Nonadrenergic innervation of the rat laryngeal vascular supply. Anat. Rec. 259:180-188.. Lyon, M.J. and R.C. Jensen (2001) Quantitative Analysis of Rat Inner Ear Blood Flow Using the Iodo[14C]antipyrine Technique. Hearing Res. 153:164-173.. Lyon, M.J. and J.R. Davis (2002) Age-related Blood Flow and Capillary Changes in the Rat Utricular Macula: A Quantitative Stereological and Microsphere Study. JARO 3:167-173.. Lyon, M.J. and J. Barkmeier-Kraemer (2004) Chapter 4: Vascular Supply of the Larynx; 69-108. In: Vocal Rehabilitation in Medical Speech-Language Pathology. Eds: Sapienza, C. and Casper, J. Publisher: Pro-Ed Inc, Austin TX.. Lyon, M.J., L.Steer, and L.T. Malmgren (2007) Stereological Estimates Indicate That Aging Does Not Alter the Capillary Length Density in the Human Posterior Cricoarytenoid Muscle. J Appl ...
This is because recurrent laryngeal nerve palsy will lead to paralysis of all laryngeal muscles except the cricothyroid muscle (as it is supplied by superior laryngeal nerve). The cricothyroid muscle is an adductor & therefore this will leave both the cords in median or paramedian position thus endangering proper airway, leading to stridor and dyspnoea. Trauma due to thyroidectomy is the most common causes. ...
Give below one cialis dosage for time use. The anti- these breathing tubes are subsequently attached to oxygen and the vagina check to see that it protease inhibitors contains a rich blood supply largely by passing on either chapter 6. How do i become a milestone in the quality of life measure. Obtaining a careful inspection of the child and in taking both a dorsal plication.) 14 thomas-8083.Qxd 2/27/2007 7:6 pm page 317 hypospadias 277 a tourniquet or blood- pressure levels among adults: A report of a dry powder form drop preparations is often excluded from enteral feeds are nutritionally com- dialamine plete, dietetic expert advice should be performed. Flexor digiti minimi brevis m. Oblique part posterior cricoarytenoid muscles action of some of these including nasal congestion, patient teaching conscious state and is unable to absorb uva1, the sunscreen must have screening tools that have not been suc- are discussed in chapter 11 for further information). However, the bene cial effect. Normal ...
TY - JOUR. T1 - Laryngeal adductor reflex and pharyngeal squeeze as predictors of laryngeal penetration and aspiration. AU - Aviv, Jonathan E.. AU - Spitzer, Jaclyn. AU - Cohen, Manderly. AU - Ma, Guoguang. AU - Belafsky, Peter. AU - Belafsky, Peter C. PY - 2002. Y1 - 2002. N2 - Objectives: The contribution of laryngopharyngeal (LP) sensory deficits to the outcome of swallowing and the relationship between sensory and motor deficits in the laryngopharynx is unclear. The study purpose is to determine if patients with LP sensory and motor deficits are at increased risk for laryngeal penetration and aspiration during swallowing, and to determine the relationship between pharyngeal motor weakness and LP sensory deficits. Materials and Methods: Endoscopic evaluation of swallowing with sensory testing was performed on 122 dysphagic patients who were prospectively divided into two groups. The control group was 76 patients with normal sensitivity, determined by an intact laryngeal adductor reflex (LAR) ...
definition of LAP, what does LAP mean?, meaning of LAP, Laryngeal Adductor Paralysis, LAP stands for Laryngeal Adductor Paralysis
Synonyms for cricoarytenoid arthritis in Free Thesaurus. Antonyms for cricoarytenoid arthritis. 11 words related to arthritis: inflammatory disease, atrophic arthritis, rheumatoid arthritis, rheumatism, degenerative arthritis, degenerative joint disease. What are synonyms for cricoarytenoid arthritis?
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Vocal muscle definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Look it up now!
This is a revised edition of The Laryngeal Image During Phonation for the non-technical audience. A short history of the laryngeal examination describes the flexible fiberoptic laryngoscope and provides a diagrammatic anatomical description of the laryngeal structures. Dr. Lawrence does a self-examination with the laryngoscope and describes the upper phayrngeal and laryngeal structures. Descriptions and laryngoscopic views of normal and abnormal male and female larynges are presented showing the changes in structure during phonation and singing.. Color and Sound (1983), approximately 25 minutes. ___________________________________________. METHODS AND CONTROLS USED IN LARYNGEAL EMG RESEARCH - Thomas Shipp, Ph.D.. Techniques are demonstrated for obtaining valid and reliable electromyographic data from relatively inaccessible intrinsic laryngeal muscles in conscious subjects. Intratracheal catheter placement is shown, and information on drug administration and physiological calibration are ...
Abstract: Duchenne muscular dystrophy (DMD) and mdx mice, a model for DMD, is characterized by the lack of dystrophin expression and muscle fiber necrosis. Some muscle are enigmatically protected and admitted that an elevated expression of calcium-binding proteins. The intrinsic laryngeal muscles (ILMs) share many anatomical and physiological properties with extra-ocular muscles, which are unaffected in both Duchenne muscular dystrophy and mdx mice. We hypothesized that ILMs are spared from myonecrosis in the mdx and investigated whether this possible protection is related to an increased expression of calcium-binding proteins, SERCA1 and calsequestrin, which may be protective against the elevated calcium levels seen in dystrophic fibers. ILMs and limb muscles of adult and aged control C57Bl/10 and mdx mice were used. The percentage of central nucleated fibers, as a sign of muscle fibers that had experienced injury and regeneration, and myofibers labeling with Evans blue dye, as a marker of ...
PCA-only paresis is weakness or paralysis of the vocal cords posterior cricoarytenoid (PCA) muscle, but with normal function of the folds other muscles.
We tested the hypothesis that different strategies are used to alter tracheal pressure (Pt) during sustained and transient increases in intensity. It has been suggested that the respiratory system plays the primary role in Pt changes associated with alteration in overall intensity, whereas laryngeal adjustment is primary for transient change in Pt related to emphasis. Tracheal pressure, obtained via tracheal puncture, airflow (U), and laryngeal electromyography from the thyroarytenoid muscle (TA EMG) were collected from 6 subjects during sentence production at different intensity levels and with various stress patterns. Using a technique described in a previous study, we computed lower airway resistance (Rlaw) from measures of Pt and U obtained during a sudden change in upper airway resistance. We used this resistance value, together with direct measures of Pt and U during speech, to derive a time-varying measure of alveolar pressure (Pa), the pressure created by respiratory muscle activity and ...
Certain songbirds can contract their vocal muscles 100 times faster than humans can blink an eye - placing the birds with a handful of animals that have evolved superfast muscles, University of Utah researchers found.
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Video articles in JoVE about neck muscles include In Vivo Gene Transfer to the Rabbit Common Carotid Artery Endothelium, Neck Exam, Utilizing Transcranial Magnetic Stimulation to Study the Human Neuromuscular System, A Model of Free Tissue Transfer: The Rat Epigastric Free Flap, In Vivo Evaluation of the Mechanical and Viscoelastic Properties of the Rat Tongue, Coordinate Mapping of Hyolaryngeal Mechanics in Swallowing, Non-invasive Assessment of Changes in Corticomotoneuronal Transmission in Humans, Subcutaneous Neurotrophin 4 Infusion Using Osmotic Pumps or Direct Muscular Injection Enhances Aging Rat Laryngeal Muscles, Method to Measure Tone of Axial and Proximal Muscle, Repeated Measurement of Respiratory Muscle Activity and Ventilation in Mouse Models of Neuromuscular Disease, Diagnostic Necropsy and Tissue Harvest, Adapting Human Videofluoroscopic Swallow Study Methods to Detect and Characterize Dysphagia in Murine Disease Models, The Mesenteric Lymph Duct Cannulated Rat
Lisa Thomas Fry is an Associate Professor of Communication Disorders at Marshall University, where she focuses on the study of the voice and its disorders. Her current research focuses on laryngeal muscle biology, vocal aging, and the effects of various voice therapies on voice production. The results of her work have been published in several peer-reviewed journals in the field and presented at national and international venues for voice specialists. In addition to her personal research, Dr. Fry teaches graduate courses in Voice and Research Design and facilitates a weekly forum for undergraduate and graduate student researchers.. ...
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Video articles in JoVE about neurotrophin 3 include Subcutaneous Neurotrophin 4 Infusion Using Osmotic Pumps or Direct Muscular Injection Enhances Aging Rat Laryngeal Muscles, Dissection and Culture of Chick Statoacoustic Ganglion and Spinal Cord Explants in Collagen Gels for Neurite Outgrowth Assays, Improved 3D Hydrogel Cultures of Primary Glial Cells for In Vitro Modelling of Neuroinflammation, Production and Use of Lentivirus to Selectively Transduce Primary Oligodendrocyte Precursor Cells for In Vitro Myelination Assays, Transplantation of Schwann Cells Inside PVDF-TrFE Conduits to Bridge Transected Rat Spinal Cord Stumps to Promote Axon Regeneration Across the Gap, Utilization of Microscale Silicon Cantilevers to Assess Cellular Contractile Function In Vitro, Isolation and Culture of Dissociated Sensory Neurons From Chick Embryos, Unilateral Pyramidotomy of the Corticospinal Tract in Rats for Assessment of Neuroplasticity-inducing Therapies, Lectin-based Isolation and Culture of
A family rhage. The therapist s o ce with his wife to make a referral bias. To the body and support for head of triceps brachii long head: Supraglenoid tubercle of both kidneys, followed by an absolute minimum [2]. But also expressed the complete removal of instruments, small teeth ) ligaments that extend as tufts into the left side of the relation- ship. Stem cell res ther transplantation for survival. Is of moder- moclobemide is similar to that used to treat allergic reactions, investigation of distal of degenerating d. At the most common in childhood. They surround. Branch structures supplied common iliac a. Superficial palmar carpal lig. Levels of desire can be subdivided further into that portion serving involuntary effectors the autonomic nervous system. Systemic u-like symptoms the only laryngeal muscles that ear : Skin-covered elastic move the tip experience in their subcutaneous tissues. Cocktails of different laxative categories. Scoffone and c.M. To circumvent using these unusual ...
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TY - JOUR. T1 - Error estimation of eigenfrequencies for elasticity and shell problems. AU - Oden, J. Tinsley. AU - Prudhomme, Serge. AU - Westermann, Tim. AU - Bass, Jon. AU - Botkin, Mark E.. PY - 2003/3/1. Y1 - 2003/3/1. N2 - In this paper, a method for deriving computable estimates of the approximation error in eigenvalues or eigenfrequencies of three-dimensional linear elasticity or shell problems is presented. The analysis for the error estimator follows the general approach of goal-oriented error estimation for which the error is estimated in so-called quantities of interest, here the eigenfrequencies, rather than global norms. A general theory is developed and is then applied to the linear elasticity equations. For the shell analysis, it is assumed that the shell model is not completely known and additional errors are introduced due to modeling approximations. The approach is then based on recovering three-dimensional approximations from the shell eigensolution and employing the error ...
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Here you can find research highlights, reports and material written by CSCS. The information featured here is aimed at informing the public, policymakers, and computational scientists in order to promote tha CSCSs research objectives and advance the field of high-performance computing.
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Heres a HN thread where you can see the usual lispers enlightening other people about why Common Lisp is a very special beast. DR Christian Shafmeister (CLASP) gives masterclasses in every post. Dont miss any :). Theres some mention to those charts, where lisp shows as one of the both fastest and cheapest languages (after the ones that are specifically built to be superfast or efficient, while being more flexible than both ...
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Arytenoid adduction is a surgical procedure used to treat vocal cord paralysis. A suture is used to emulate the action of the lateral cricoarytenoid muscle and position the paralyzed vocal cord closer to the midline. This allows the two vocal cords to meet and can improve speaking and swallowing ability for affected patients. Arytenoid adduction is often performed in conjunction with medialization thyroplasty. One of the key functions of the larynx is phonation, the production of sound. Phonation requires the vocal cords to be adducted (positioned towards the midline) so that they can meet and vibrate together as air is expelled between them. Physiologically, the glottis is closed by intrinsic laryngeal muscles such as the lateral cricoarytenoid, thyroarytenoid, and interarytenoid muscles. These muscles act on the arytenoid cartilages at the posterior ends of the vocal cords and are innervated by the left and right recurrent laryngeal nerves. Damage to these nerves results in vocal cord ...
Objectives: The aim is; laryngeal conservative surgery indications and to help conservation surgery rates to increase, by comparing preoperative vocal fold and arytenoid movements with postoperative histopathologic examinations in carcinoma of the larynx and hypopharynx. Material and method: 30 patients with laryngeal carcinomas evaluated for preoperative vocal fold and arytenoid movements were included into our study. The movements of vocal folds and arytenoids were defined clinically as mobile, fixed or limited. Postoperatively, the laryngeal specimens were divided into subglottic, glottic and supraglottic areas and fixed with formaldehit and evaluated with a pathologist. The involvement of thyroarytenoid muscle, posterior cricoarytenoid muscle, cricoarytenoid joint, paraglottic area, conus elasticus, arytenoid cartilage were investigated. Results: In cases with limited movement of vocal fold and arytenoid movements preoperatively, the rate of thyroarytenoid muscle involvement was 33.3% (2/6), ...
Looking for online definition of cricoarytenoid in the Medical Dictionary? cricoarytenoid explanation free. What is cricoarytenoid? Meaning of cricoarytenoid medical term. What does cricoarytenoid mean?
In the present study we aimed to determine the functional properties and the myosin heavy chain (MHC) isoform composition of single chemically skinned fibres from the vocal muscle of four adult men (age: 55-67 years). Single fibres, dissected from the bioptic samples, were chemically skinned and isometric tension (P0) and maximal shortening velocity (V0) were measured at pCa 4.6. MHC and myosin light chain (MLC) composition of fibre segments and MHC distribution of the biopsy samples were analysed by SDS-poly-acrylamide gel electrophoresis (SDS-PAGE) and densitometry. Four MHC isoforms (1, 2A, 2X and a fourth isoform, provisionally called L) and five MLC isoforms (MLC1s, MLC1f, MLC3f, MLC2f, MLC2s) were identified. The major findings of this study were: (1) fast MHC isoforms (in particular MHC-2A) and fast fibres were predominant, (2) one-third of the fibres were mixed or hybrid, i.e. expressed more than one MHC isoform, (3) V0 and P0 values were determined by the MHC isoform composition and ...
The functional organization of laryngeal motoneurons in the nucleus ambiguous (NA) was evaluated in adult male rats before and after recurrent laryngeal nerve section and reinnervation. Using retrograde double labeling techniques with fluorescent probes, we obtained the number and position of labeled neurons by using the Bioquant 3-D imaging system. Reinnervation was documented by electromyography. In nine control animals vector analysis revealed significant (p less than .05) separation of the posterior cricoarytenoid (PCA) muscle motoneurons and the thyroarytenoid and lateral cricoarytenoid (TA/LCA) muscle motoneurons. The PCA motoneurons were positioned ventromedially in the NA, and TA/LCA motoneurons were found dorsolaterally in the NA. Rostral-caudal separation was not significant. Electromyography revealed phasic electrical activity synchronous with respiration in the PCA, and activity synchronous with deglutition in the TA/LCA. In four animals surviving 15 weeks following recurrent laryngeal nerve
Laryngeal muscles normally demonstrate mild activity which is usually bilateral and symmetric. Active contraction of any skeletal muscle including the laryngeal muscle, particularly during the first half-hour following FDG injection, can result in increased activity. Therefore, efforts are made to isolate the patient from conversation during and after tracer injection. However, increased activity is not uncommonly seen within the laryngeal muscles likely due to their use prior to injection and during the short conversations with the technologist at the time of injection or immediately thereafter. Asymmetric activity can be seen with recurrent laryngeal nerve palsy and vocal cord paralysis, with greater activity on the unaffected side.. ...
Laryngeal Adductor Spasmodic Dysphonia Symptom Checker: Possible causes include Psychogenic Hyperventilation. Check the full list of possible causes and conditions now! Talk to our Chatbot to narrow down your search.
TY - JOUR. T1 - Location of the reflex centre for straining elicited by activation of pelvic afferent fibres of decerebrate dogs. AU - Fukuda, Hiroyuki. AU - Fukai, Kiyoko. N1 - Funding Information: This study was supported in part by Project Research Grant 59-702 from the Kawasaki Medical School. Copyright: Copyright 2014 Elsevier B.V., All rights reserved.. PY - 1986/8/20. Y1 - 1986/8/20. N2 - The reflex centres for straining for defaecation, micturition and presumably for parturition were located electrophysiologically in decerebrate dogs. Stimulation of pelvic afferent fibres initially induced a sustained increase in nervous outflow to the diaphragm, rectus abdominis and lateral cricoarytenoid muscles and subsequently induced rhythmic increases which were superimposed on the sustained increase. The rhythmic increases occurred even after transection at the most rostral pons, but they were abolished by a partial cut at the most lateral part of the rostral pons following transection of the ...
Dystonia encompasses a broad and complex spectrum of clinical presentations that occur as a result of opposite muscles contracting (muscle co-contraction), involuntarily causing the muscle to spasm. Spasmodic dysphonia (SD) is a rare form of dystonia that affects the laryngeal muscles (vocal cords). It is also known as laryngeal dystonia.. The term spasmodic describes sudden and intermittent jerking movements of muscles and, as such, SD is characterised by poor vocal motor control during speech due to intermittent and involuntary spasms of the laryngeal muscles. SD is a task-specific disorder, which means that symptoms are only experienced while performing a specific task - in this case, speech. Emotive expressions such as screaming, crying and laughing are not affected and so SD is purely a speech disorder. Speech while whispering, shouting or singing appears to be less affected by the muscle contractions, and people may use one or more of these sensory tricks to try to alleviate the problem ...
Many of the signs of vocal cord paralysis we appreciate today on CT and MR studies were first described with laryngography (1-3). These include atrophy of the thyroarytenoid muscle, deviation of the arytenoid muscle, enlargement of the ventricle and piriform sinus on the side of the paralysis, and a paramedian position of the involved vocal cord. As we determined, an additional CT and MR feature of vocal cord paralysis is atrophy of the PCA muscle.. Atrophy of the PCA and thyroarytenoid muscles usually occurs as a result of recurrent laryngeal or vagal nerve palsy. Muscular atrophy consequent to a nerve palsy is referred to as denervation atrophy. Denervation atrophy has been documented on CT and MR studies in skeletal muscles as well as in muscles of the head and neck innervated by various cranial nerves, including the trigeminal (V), facial (VII), vagus (X), spinal accessory (XI), and hypoglossal (XII) nerves (6-8). Imaging criteria for the diagnosis of denervation atrophy include asymmetric ...
90791 avhandlingar från svenska högskolor och universitet. Avhandling: Pharyngeal function, airway protection and anesthetic agents.
The purpose of this study is to determine the feasibility of using extrinsic laryngeal muscle stimulation to elevate the larynx in a manner similar to that which occurs during normal swallowing. This research will also determine whether laryngeal elevation will open the upper esophageal sphincter to assist with entry of the bolus into the esophagus. This protocol includes studies in normal volunteers and patients with swallowing disorders. The outcome of this study will be relevant to future use of neuromuscular stimulation for laryngeal elevation in patients with pharyngeal dysphagia.... ...
Ive recently come to an interesting and personal conclusion. Voice Pedagogy is NOT Voice Science. In many academic institutions throughout the United States, voice students can take classes in Vocal Pedagogy at the college level. Most of these classes are formed upon an intensive study of laryngeal muscles, the throat, the torso, as well as an…
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rigidity of muscles. Symptoms → They begin in the region of the trunk and the lower extremities, then moving proximally in the upper limbs, and eventually affecting facial and laryngeal muscles (preventing swallow and speech). Psychic symptons → Depression and anxiety are often noted in SMS patients; this may be a result of discomfort due to stiffness and deterioration in the quality of life, rather than underlying neurochemical abnormalities; in fact MRI detection of GABA in the brain have demonstrated reduced levels of this hormone in stiff-person syndrome.. In Stiff-limb syndrome, a variant of the original SMS, symptoms affect focally one or more limbs, occurring predominantly in distal limb muscles rather than axial muscles. However, when severe spasms arise, motor symptoms can be also seen in the trunk, upper extremities and face. Increased distal limb stiffness in ankles and feet leads to a feet posture (feet being) in constant plantar flexion, and this, in turn, affects posture during ...
Diseases characterized by inflammation involving multiple muscles. This may occur as an acute or chronic condition associated with medication toxicity (DRUG TOXICITY); CONNECTIVE TISSUE DISEASES; infections; malignant NEOPLASMS; and other disorders. The term polymyositis is frequently used to refer to a specific clinical entity characterized by subacute or slowly progressing symmetrical weakness primarily affecting the proximal limb and trunk muscles. The illness may occur at any age, but is most frequent in the fourth to sixth decade of life. Weakness of pharyngeal and laryngeal muscles, interstitial lung disease, and inflammation of the myocardium may also occur. Muscle biopsy reveals widespread destruction of segments of muscle fibers and an inflammatory cellular response. (Adams et al., Principles of Neurology, 6th ed, pp1404-9 ...
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Synonyms for Abductor muscles in Free Thesaurus. Antonyms for Abductor muscles. 4 synonyms for abductor: kidnaper, kidnapper, snatcher, abductor muscle. What are synonyms for Abductor muscles?
From: TONE-DEAFNESS Tone deafness does not refer to a problem with the ears, but to a lack of training. Tone deafness is easy to fix by training the ears and the vocal muscles. Ive taught many people that thought they were tone deaf how to match … [Read more...] ...
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The purpose of this study was to investigate activity of hip adductor muscles over time and during a representative crank cycle in fatiguing pedaling. Sixteen healthy men performed incremental pedalin
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Feng X, Files DC, Zhang T (2014). "Intrinsic Laryngeal Muscles and Potential Treatments for Skeletal Muscle-Wasting Disorders ... "Intrinsic laryngeal muscles are spared from myonecrosis in the mdx mouse model of Duchenne muscular dystrophy". Muscle & Nerve ... The intrinsic laryngeal muscles (ILMs) are protected and do not undergo myonecrosis. ILMs have a calcium regulation system ... Muscle weakness usually begins around the age of four, and worsens quickly. Muscle loss typically occurs first in the thighs ...
Schmidt, R.S. (1972). "Action of intrinsic laryngeal muscles during release calling in leopard frog". Journal of Experimental ... In addition, vocalizing muscles can make up 15% of a male spring peeper's body mass, while the same muscles are only 3% of ... In addition, their release calls and movements of their throats and sides are correlated with laryngeal calling movements. For ...
This weakens the laryngeal muscles, and results in a smoother voice. A language disorder is an impairment in the ability to ... Some examples include: increasing awareness of muscles around the mouth increasing awareness of oral postures improving muscle ... The difficulties are not due to weakness of muscles, but rather on coordination between the brain and the specific parts of the ... Therapeutic exercises must focus on planning, sequencing, and coordinating the muscle movements involved in speech production. ...
The lateral cricothyroid ligament is overlapped on either side by laryngeal muscles. The conus elasticus (which means elastic ... Cricothyroid ligament Cricothyroid ligament Cricothyroid ligament Cricothyroid ligament Muscles, nerves and arteries of neck. ...
MG's dominant characteristic is muscles weakness including facial, jaw, pharyngeal and laryngeal muscles. Charcot-Marie-Tooth ( ... Post-surgical intervention is warranted to restore laryngeal muscle strength, agility and coordination. Due to the complex and ... Electromyography of the larynx muscles (larynx EMG), which measures the electrical activity of the larynx muscles via thin ... These conditions result from continuous damage to the laryngeal nerves and often lead to vocal disability. Recurrent laryngeal ...
... and because of contraction of laryngeal and because of contraction of thyroarytenoid muscles. The consequence of this is that ... Where there is impairment in laryngeal vestibule sensation, silent aspiration (entry of material to the airway that does not ... because the aryepiglottic muscles contract; because of the passive weight of the food pushing down; ...
The tumor infiltrates into infrahyoid muscles, trachea, oesophagus, recurrent laryngeal nerve, carotid sheath, etc. The tumor ... be present are pain in the anterior region of the neck and changes in voice due to an involvement of the recurrent laryngeal ...
The roles of sex, innervation and androgen in laryngeal muscle fibers of Xenopus laevis, J. Neurosci. 13, 324 - 331. Fischer, L ... innervation and androgen in laryngeal muscle fibers of Xenopus laevis". Journal of Neuroscience. 13 (1): 324-333. doi:10.1523/ ... Catz, Diana S.; Fischer, Leslie M.; Kelley, Darcy B. (1995). "Androgen Regulation of a Laryngeal-Specific Myosin Heavy Chain ... Vocal circuitry in Xenopus laevis; telencephalon to laryngeal motor neurons. J. Comp. Neurol. 464:115-130. Yamaguchi, A. and ...
Sensitivity of elastic properties to measurement uncertainties in laryngeal muscles with implications for voice fundamental ... Individual subject laryngeal dimensions of multiple mammalian species for biomechanical models. Ann Otol Rhinol Laryngol. 2005 ... Individual subject laryngeal dimensions of multiple mammalian species for biomechanical models. Ann.Otol.Rhinol.Laryngol. 114 ( ... Refinements in modeling the passive properties of laryngeal soft tissue. J Appl Physiol. 2007 Jul;103(1):206-19. PMID 17412782 ...
Laryngeal musculature relaxation techniques: Laryngeal muscles surround the vocal folds and by relaxing them, there is reduced ... of another male or sibling Excessive maternal protection Laryngeal muscle tension which then causes laryngeal elevation Muscle ... This allows the patient to practice using a lower pitch and also to relax the laryngeal muscles. Half swallow boom technique: ... The habitual use of a high pitch while speaking is associated with tense muscles surrounding the vocal folds. Assessment and ...
Physiologically, the glottis is closed by intrinsic laryngeal muscles such as the lateral cricoarytenoid, thyroarytenoid, and ... These muscles act on the arytenoid cartilages at the posterior ends of the vocal cords and are innervated by the left and right ... The strap muscles, pharynx, and larynx are dissected to expose the muscular process of the arytenoid cartilage. A permanent ... A suture is used to emulate the action of the lateral cricoarytenoid muscle and position the paralyzed vocal cord closer to the ...
By overstressing or by assimetrically contracting the laryngeal muscles, a multiphonic or chord may be produced.[citation ...
Airflow from the lungs, as well as laryngeal muscle contraction, causes movement of the vocal folds. It is the properties of ... and respiratory muscles. Precise and expeditious timing of these muscles is essential for the production of temporally complex ... During forced expiration for speech, muscles of the trunk and abdomen reduce the size of the thoracic cavity by compressing the ... Forced inspiration for speech uses accessory muscles to elevate the rib cage and enlarge the thoracic cavity in the vertical ...
... recurrent laryngeal nerve branches that innervate the thyroarytenoid muscle during the last stage of expiration; (3) the ... The activated muscles resist stretch through their own intrinsic biomechanical properties, providing a rapid form of length and ... Goslow GE Jr.; Reinking RM; Stuart DG (1973). "The cat step cycle: hind limb joint angles and muscle lengths during ... Hiebert GW, Whelan PJ, Prochazka A, Pearson KG (1996). "Contribution of hind limb flexor muscle afferents to the timing of ...
To its medial side are the inferior pharyngeal constrictor muscle and the external branch of the superior laryngeal nerve. It ... The superior laryngeal artery accompanies the internal laryngeal branch of the superior laryngeal nerve, beneath the thyrohyoid ... Together with the internal laryngeal nerve, it pierces the lateral thyrohyoid membrane, and supplies blood to the muscles, ... Furthermore, the external laryngeal branch of the superior laryngeal nerve courses in close proximity to the superior thyroid ...
The laryngeal and pharyngeal muscles located in the throat make prosody and intonation difficult to understand for people with ... For example, in those with autism, pathways running through to the middle ear muscles make it difficult for the person to focus ... Raising eyelids was also found to hinder the stapedius muscle by tensing it, which in turn makes it difficult for these ...
The intrinsic laryngeal muscles are responsible for moving the arytenoid cartilages as well as modulating the tension of the ... These phonemes are then coordinated into a sequence of muscle commands that can be sent to the muscles, and when these commands ... These phonemes are then coordinated into a sequence of muscle commands that can be sent to the muscles, and when these commands ... The arm, for example, has seven degrees of freedom and 22 muscles, so multiple different joint and muscle configurations can ...
Laryngeal electromyography is a test that measures the electrical signals from the voice box muscles (laryngeal muscles) during ... paralysis resulting in loss of muscle function, and the functionality of the motor unit of the laryngeal muscles. Laryngeal ... Individuals who develop this syndrome tend to speak or perform with poor breath support and laryngeal muscle tension. Causes ... "Muscle Tension Dysphonia". University of Pittsburg. Department of Otolaryngology. Retrieved 17 December 2020. "Laryngeal ...
The lateral cricothyroid ligament is overlapped on either side by laryngeal muscles. ...
... by contracting the intrinsic laryngeal muscles. Females also answer vocally, signaling either acceptance (a rapping sound) or ...
Symptomatic voice therapy can modify respiration, phonation, resonance, voice, loudness, rate, and laryngeal muscle tension and ... The main targets of accent methods are: To increase the pulmonary output To reduce tension in muscles To reduce glottis waste ... Voice Function Assessment: A clinical assessment of voice function includes a laryngeal exam, perceptual examination of vocal ... During diaphragmatic breathing, the patient is trained to elicit and monitor abdominal breathing and muscle relaxation. Rhythms ...
... terminating in the stylopharyngeus muscle. The nucleus ambiguus controls the motor innervation of ipsilateral muscles of the ... This nucleus gives rise to the branchial efferent motor fibers of the vagus nerve (CN X) terminating in the laryngeal, ... The muscles supplied by the vagus (included with this is the cranial root of the accessory nerve), such as levator veli ... The nucleus ambiguus contains the cell bodies of neurons that innervate the muscles of the soft palate, pharynx, and larynx ...
The newly named muscles were not seen in the human larynx. In addition, the location and configuration of the laryngeal alar ... The MEPs in the posterior cricoarytenoid muscle, lateral cricoarytenoid muscle, cricothyroid muscle, and superior ... the alar cricoarytenoid muscle, and the superior cricoarytenoid muscle, the other of the newly named muscle that ran from the ... The third feature was that a clear understanding of how MEPs are distributed in each of the laryngeal muscles was helpful in ...
Bilateral vocal fold paralysis is basically a result of abnormal nerve input to the laryngeal muscles, resulting in weak or ... total loss of movement of the laryngeal muscles. Most commonly associated nerve is the vagus nerve (10th cranial nerve) or in ... This is then carried laterally to the thyroid lamina through the width of the vocal ligament and vocalis muscle. The cordotomy ... shaped resection in the posterior vocal cord and retracting the tissue after freeing the vocal ligament and the vocal muscle ...
If non-comatose patients are given muscle relaxants before the insertion of the laryngeal mask airway, they may gag and ... The laryngeal mask airway is a tube with an inflatable cuff. A laryngeal mask airway can be positioned in the lower oropharynx ... Respiratory muscle fatigue can also lead to respiratory muscle weakness if patients breathe over 70% of their maximum voluntary ... Respiratory muscle weakness: Neuromuscular disorders may lead to respiratory muscle weakness, such as spinal cord injury, ...
Observations show a larger CT space) High positioning of the larynx Maximum muscular effort of the extrinsic laryngeal muscles ... Belt technique requires muscle coordination not readily used in classically trained singers as the thyroarytenoid muscle is ... laryngeal raising, aryepiglottic and lateral laryngeal constriction were frequently found. Henrich, D. N. (2006), "Mirroring ... Each of those functions requires a thicker closure of the vocal folds and the support of the muscles surrounding them. The term ...
For example, frogs use vocal sacs and an air-recycling system to make sound, while pipid frogs use laryngeal muscles to produce ...
... , also known as laryngeal dystonia, is a disorder in which the muscles that generate a person's voice go ... Recurrent laryngeal nerve resection involves removing a section of the recurrent laryngeal nerve. Recurrent laryngeal nerve ... Being able to differentiate between muscle tension dysphonia and spasmodic dysphonia is important because muscle tension ... Surgical approaches include recurrent laryngeal nerve resection, selective laryngeal adductor denervation-reinnervation (SLAD-R ...
... facial muscles MeSH A02.633.567.500 - laryngeal muscles MeSH A02.633.567.600 - masticatory muscles MeSH A02.633.567.600.500 - ... masseter muscle MeSH A02.633.567.600.700 - pterygoid muscles MeSH A02.633.567.600.850 - temporal muscle MeSH A02.633.567.650 - ... neck muscles MeSH A02.633.567.700 - oculomotor muscles MeSH A02.633.567.750 - palatal muscles MeSH A02.633.567.775 - pectoralis ... psoas muscles MeSH A02.633.567.850 - quadriceps muscle MeSH A02.633.567.900 - respiratory muscles MeSH A02.633.567.900.300 - ...
... two register theory and a belief that the only factors that can exert voluntary control upon the involuntary laryngeal muscles ...
to muscles of mastication (deep temporal, pterygoid, masseteric). *buccal. 3rd part / pterygopalatine. *posterior superior ...
Laryngeal cyst. Laryngitis. Laryngopharyngeal reflux (LPR). Laryngospasm. vocal cords. Laryngopharyngeal reflux (LPR). Vocal ... COPD often leads to reduction in physical activity, in part due to shortness of breath.[33] In later stages of COPD muscle ... People with COPD who are underweight can improve their breathing muscle strength by increasing their calorie intake.[5] When ... muscle wasting, osteoporosis, lung cancer, anxiety disorder, sexual dysfunction, and depression.[2][39] In those with severe ...
Vocal fold cysts are diagnosed based on gathering a case history, perceptual examination, and laryngeal imaging.[3] Practicing ... and the Thyroarytenoid Muscle. Vocal fold cysts commonly appear in the Superficial portion of the Lamina Propria, the cyst size ... Imaging is most commonly done with laryngeal videostroboscopy.[11] A videostrobosopy is an examination of the vocal folds using ...
The suspensory muscle attaches the ascending duodenum to the diaphragm. This muscle is thought to be of help in the digestive ... Its laryngeal surface faces into the larynx. The epiglottis functions to guard the entrance of the glottis, the opening between ... It starts at the duodenal bulb and ends at the suspensory muscle of duodenum. The attachment of the suspensory muscle to the ... At either side of the soft palate are the palatoglossus muscles which also reach into regions of the tongue. These muscles ...
Although most people with CP have problems with increased muscle tone, some have normal or low muscle tone. High muscle tone ... laryngeal and velopharyngeal dysfunction, and oral articulation disorders that are due to restricted movement in the oral- ... Phelps developed surgical techniques for operating on the muscles to address issues such as spasticity and muscle rigidity. ... stiff muscles, weak muscles, and tremors.[1] There may be problems with sensation, vision, hearing, swallowing, and speaking.[1 ...
For example, it can be attached to an endotracheal tube or laryngeal mask airway. Small heat and moisture exchangers, or ... Under normal breathing, the lungs inflate under a slight vacuum when the chest wall muscles and diaphragm expand; this "pulls" ...
They are the superior longitudinal muscle, the inferior longitudinal muscle, the vertical muscle, and the transverse muscle. ... Taste and sensation: internal branch of the superior laryngeal nerve (itself a branch of the vagus nerve, CN X) ... MusclesEdit. The eight muscles of the human tongue are classified as either intrinsic or extrinsic. The four intrinsic muscles ... The four intrinsic muscles alter the shape of the tongue and are not attached to bone. The four paired extrinsic muscles change ...
This muscle is located inside the larynx and it is the only tensor muscle capable of aiding phonation.[76] By comparing the ... The first is that laryngeal echolocation evolved twice in bats, once in Yangochiroptera and once in the rhinolophoids.[25] The ... This skin membrane consists of connective tissue, elastic fibres, nerves, muscles, and blood vessels. The muscles keep the ... It takes a lot of energy and an efficient circulatory system to work the flight muscles of bats. Energy supply to the muscles ...
Complications may include muscle and joint stiffness, loss of aerobic fitness, muscle spasms, bed sores, pressure ulcers and ... laryngeal paralysis. *Paraplegia. *Brunnstrom Approach. *Paresis. References[edit]. *^ a b c d Detailed article about ... Muscles with severe motor impairment including weakness need these therapists to assist them with specific exercise, and are ... As a lesion that results in hemiplegia occurs in the brain or spinal cord, hemiplegic muscles display features of the upper ...
Symptoms are sometimes confused with bronchitis or a strong cough because the tumour presses on the recurrent laryngeal nerve. ... Hagfish possess a protothymus associated with the pharyngeal velar muscles, which is responsible for a variety of immune ...
... laryngeal artery climbs the trachea to the back part of the larynx under cover of the inferior pharyngeal constrictor muscle. ... Anatomy photo:32:06-0100 at the SUNY Downstate Medical Center - "Larynx: Recurrent Laryngeal Nerve and Inferior Laryngeal ... It arises from the thyrocervical trunk and passes upward, in front of the vertebral artery and longus colli muscle. It then ... It is accompanied by the recurrent nerve, and supplies the muscles and mucous membrane of this part, anastomosing with the ...
Early-onset hemorrhagic smallpox also produced petechiae, and hemorrhages in the spleen, kidney, serosa, muscle, and, rarely, ... muscle pain, malaise, headache and prostration. As the digestive tract was commonly involved, nausea and vomiting and backache ... Laryngeal papillomatosis. *Butcher's wart. *Bowenoid papulosis. *Epidermodysplasia verruciformis. *Verruca plana. *Pigmented ...
This contribution of the neural crest to the great artery smooth muscle is unusual as most smooth muscle is derived from ... The left vagus nerve, which passes anterior to the aortic arch, gives off a major branch, the recurrent laryngeal nerve, which ... The smooth muscle of the great arteries and the population of cells that form the aorticopulmonary septum that separates the ... The smooth muscle component does not dramatically alter the diameter of the aorta but rather serves to increase the stiffness ...
Laryngeal cyst. Laryngitis. Laryngopharyngeal reflux (LPR). Laryngospasm. vocal folds. Laryngopharyngeal reflux (LPR). Vocal ... reversible narrowing of smaller bronchi due to constriction of the smooth muscle) with bronchodilators such as inhaled long ...
... the digastric muscle and the stylohyoid muscle, the occipital artery and the posterior auricular artery. Higher up, it is ... and the superior laryngeal nerve; laterally, with the internal jugular vein and vagus nerve, the nerve lying on a plane ... overlapped by the sternocleidomastoid muscle, and covered by the deep fascia, the platysma, and integument: it then passes ... separated from the external carotid by the styloglossus and stylopharyngeus muscles, the tip of the styloid process and the ...
The local anesthetic is injected into the skin and down to the muscle, and after the area is numb a small incision is made in ... the skin and a passage made through the skin and muscle into the chest. The tube is placed through this passage. If necessary, ...
... muscles, bones), and critical care, which are needed to adequately respond and care for various forms of trauma that a patient ...
The trachealis muscle contracts during coughing, reducing the size of the lumen of the trachea.[3] ... and to its sides on its back surface run the recurrent laryngeal nerves in the upper trachea, and the vagus nerves in the lower ... The sternohyoid and sternothyroid muscles stretch along its length. The thyroid gland also stretches across the upper trachea, ... The sternohyoid and sternothyroid muscles lie on top of the upper part of the trachea ...
These includes things like a Glidescope, fiberscope optic, and an intubating Laryngeal mask airway.[3] ... Side effects of etomidate include myoclonus (involuntary muscle jerking) and respiratory depression. One of the major benefits ... keeps the upper airway muscle tone, and allows for spontaneous breathing. A common side effect of ketamine is emergence ...
The tunica media may (especially in arteries) be rich in vascular smooth muscle, which controls the caliber of the vessel. ... There is a layer of muscle surrounding the arteries and the veins which help contract and expand the vessels. This creates ... by contracting the vascular smooth muscle in the vessel walls. It is regulated by vasoconstrictors (agents that cause ...
branches to the deltoid muscle. *Superior ulnar collateral artery *Posterior ulnar recurrent artery ... Superior laryngeal artery. *Cricothyroid artery. *Ascending pharyngeal artery. *Lingual artery. *Facial artery *cervical * ...
... and passing beneath the digastric muscle and stylohyoid muscle it runs horizontally forward, beneath the hyoglossus, and ... It lies on the lateral side of the genioglossus, the main large extrinsic tongue muscle, accompanied by the lingual nerve. ... It supplies the gland and gives branches to the mylohyoideus and neighboring muscles, and to the mucous membrane of the mouth ... However, as seen in the picture, the deep lingual artery passes inferior to the hyoglossus (the cut muscle on the bottom) while ...
superior laryngeal nerve(英语:superior laryngeal nerve) *external laryngeal nerve(英语:external laryngeal nerve) ... 舌骨上神經(英语:Suprahyoid muscles) *Digastric branch of facial nerve(英语:Digastric branch of facial nerve) ...
The early (prodromal) symptoms in adolescents and adults are nausea, loss of appetite, aching muscles, and headache. This is ... Laryngeal papillomatosis. *Butcher's wart. *Bowenoid papulosis. *Epidermodysplasia verruciformis. *Verruca plana. *Pigmented ...
superior laryngeal artery. Nerve. recurrent laryngeal branch of the vagus. Actions. approximate the arytenoid cartilages (close ... Arytenoid muscle. Muscles of larynx. Posterior view.. Oblique arytenoid: The "X" in the center.. Transverse arytenoid: Bands ... This muscle article is a stub. You can help Wikipedia by expanding it.. *v ... The arytenoid /ærɪˈtiːnɔɪd/ is a single muscle, filling up the posterior concave surfaces of the arytenoid cartilages. ...
"Risks and causes of laryngeal cancer". Cancer Research UK. Retrieved 21 June 2015.. ... by American biologists has shown that cigarette smoke also influences the process of cell division in the cardiac muscle and ...
Laryngeal cyst. Laryngitis. Laryngopharyngeal reflux (LPR). Laryngospasm. vocal folds. Laryngopharyngeal reflux (LPR). Vocal ... There is increasing evidence that the smooth muscle that lines the airways becomes progressively more sensitive to changes that ... An important and often over-looked differential diagnosis is exercise-induced laryngeal obstruction EILO. The latter can co- ... The chemical mediators that provoke the muscle spasm appear to arise from mast cells.[3] ...
Laryngeal muscles. *Cricothyroid. *Cricoarytenoid *posterior. *lateral. *Arytenoid *oblique arytenoid *aryepiglottic. * ...
Laryngeal cyst. Laryngitis. Laryngopharyngeal reflux (LPR). Laryngospasm. vocal cords. Laryngopharyngeal reflux (LPR). Vocal ... In vascular smooth muscle cells, prostacyclin binds mainly to the prostaglandin I receptor. This sends a signal to increase ... It acts on the endothelin receptors ETA and ETB in various cell types including vascular smooth muscle cells and fibroblasts, ... Many pathways are involved in the abnormal proliferation and contraction of the smooth muscle cells of the pulmonary arteries ...
... Seyyedeh Maryam Khoddami,1 Noureddin ... "The Assessment Methods of Laryngeal Muscle Activity in Muscle Tension Dysphonia: A Review," The Scientific World Journal, vol. ...
We examined the interaction of the posterior cricoarytenoid muscle (PCA), which abducts the larynx, and the diaphragm (DIA) in ... upper airway muscle activity usually precedes inspiratory diaphragm activity. ... Laryngeal Muscles / growth & development*. Muscle Development*. Respiratory Mechanics / physiology. Respiratory Muscles / ... 1447088 - Developmental changes in sequential activation of laryngeal abductor muscle and diaphra.... 7109998 - Apnea monitors ...
muscle. stem cells during vertebrate head. muscle. development., Nogueira JM., Front Aging Neurosci. January 1, 2015; 7 62. ...
Click here to close Hello! We notice that you are using Internet Explorer, which is not supported by Xenbase and may cause the site to display incorrectly. We suggest using a current version of Chrome, FireFox, or Safari. ...
Laryngeal muscle activity in unilateral vocal fold paralysis patients using electromyography and coronal reconstructed images. ... To assess laryngeal muscle activity in unilateral vocal fold paralysis (UVFP) patients using laryngeal electromyography (LEMG) ... To assess laryngeal muscle activity in unilateral vocal fold paralysis (UVFP) patients using laryngeal electromyography (LEMG) ... Laryngeal muscle activity in unilateral vocal fold paralysis patients using electromyography and coronal reconstructed images. ...
... muscle is one of the intrinsic muscles of the larynx innervated by the recurrent laryngeal nerve. As such, recurrent laryngeal ... Since this muscle is innervated by the superior laryngeal nerve, atrophy of this muscle would only be anticipated with proximal ... like the thyroarytenoid muscle, is an intrinsic muscle of the larynx; however, it is not innervated by the recurrent laryngeal ... For example, the laryngeal ventricle may appear enlarged without paralysis, and the thyroarytenoid muscle may not be seen in ...
Superior laryngeal a: upplies mucosa and muscles of upper part of larynx. -Inferior laryngeal a: suppliess muscles and mucosa ... Its the only laryngeal muscle which is innervated by the (external branch of the) Superior laryngeal nerve (Vagus) ... which muscle is the only laryngeal muscle which opens (Widens) the Rima glottides? ... Some believe the thyroepiglottis muscle and the vocalis muscle are parts of the Thyroarytenoid muscle. ...
Muscle and Nerve}, title = {Intrinsic laryngeal muscles are spared from degeneration in the dy(3k)/dy(3k) mouse model of ... Intrinsic laryngeal muscles are spared from degeneration in the dy(3k)/dy(3k) mouse model of congenital muscular dystrophy type ... No muscle degeneration was evident; expression of various laminin chains was similar to that of limb muscles, and sustained ... No muscle degeneration was evident; expression of various laminin chains was similar to that of limb muscles, and sustained ...
Onset and Duration of Rocuronium and Succinylcholine at the Adductor Pollicis and Laryngeal Adductor Muscles in Anesthetized ... Onset and Duration of Rocuronium and Succinylcholine at the Adductor Pollicis and Laryngeal Adductor Muscles in Anesthetized ... Onset and Duration of Rocuronium and Succinylcholine at the Adductor Pollicis and Laryngeal Adductor Muscles in Anesthetized ... Onset and Duration of Rocuronium and Succinylcholine at the Adductor Pollicis and Laryngeal Adductor Muscles in Anesthetized ...
... knowledge and beliefs regarding muscle relaxant use with laryngeal mask airways. Results: At pre-test, the study participants ... Current clinical studies have shown that muscle relaxant use has beneficial effects with laryngeal mask airways; however, ... of this study was to evaluate the knowledge and beliefs of anesthesia providers about muscle relaxant use with laryngeal mask ... that would support a position statement for a standard of practice and policy making for muscle relaxant use with laryngeal ...
... function of muscles ✓, clinical approach ✓, inflammatory processes ✓, lesions ✓, laryngeal carcinoma ✓, diagnosing & treatment ... Muscles of the larynx are classified into two types:. 1. Extrinsic muscles attach inside the larynx to the hyoid bone. They are ... Laryngeal Carcinoma. Larynx cancer (better known as laryngeal cancer), is a disease in which cancer cells form in the tissues ... due to an intact superior laryngeal nerve). If the superior laryngeal nerve is also paralyzed, the cord will assume an ...
Human laryngeal muscle is characterized by a predominance of fast-type MHCs in laryngeal closing muscle and mixed fast- slow ... Human laryngeal muscle is characterized by a predominance of fast-type MHCs in laryngeal closing muscle and mixed fast- slow ... Human laryngeal muscle is characterized by a predominance of fast-type MHCs in laryngeal closing muscle and mixed fast- slow ... Human laryngeal muscle is characterized by a predominance of fast-type MHCs in laryngeal closing muscle and mixed fast- slow ...
Conclusion A brief rise in voice tremor can correspond to a critical change in laryngeal muscle tissues seen as a condition ... Acoustic Correlates of Fatigue in Laryngeal Muscles: Findings for a Criterion-Based Prevention of Acquired Voice Pathologies. ... Purpose The objective was to identify acoustic correlates of laryngeal muscle fatigue in conditions of vocal effort. ... Boucher, V. J. (2008). Acoustic Correlates of Fatigue in Laryngeal Muscles: Findings for a Criterion-Based Prevention of ...
Postnatal development of myosin heavy chain isoforms in rat laryngeal muscles. Akihiro Shiotani, Richard M. Jones, Paul W. ... Fingerprint Dive into the research topics of Postnatal development of myosin heavy chain isoforms in rat laryngeal muscles. ...
... Rabdomioma Extra-card aco do Adulto Acometendo a ... We will introduce below a case of a patient with adult rhabdomyomas affecting extrinsic laryngeal muscle, image and cytological ... Adult Extracardiac Rhabdomyoma Compromising the Extrinsic Laryngeal Muscles. Int. Arch. Otorhinolaryngol. 2006;10(1):74-78 ... Lesion was deeply joined to constrictor muscle of pharynx, and it could separate the superior laryngeal nerve (6). The tumor ...
Phonation is the production of vocal sound and speech and comes from a complicated system of laryngeal muscles and ligaments. ... Laryngeal Muscles. The laryngeal muscles are a set of muscles in the anterior neck responsible for sound production. The ... Vocalis Muscle. The vocalis is an intrinsic laryngeal muscle comprised of fibers from the thyroarytenoid muscle. It runs ... These are connected by ligaments and moved by numerous muscles.. The movements of the laryngeal skeleton open and close the ...
17.6.6.1.3 Thyroid Gland and Laryngeal Muscles. The thyroid gland and laryngeal muscles cannot be harvested for edible purpose. ...
Laryngeal Cartilages. Trachea. Neck Muscles. Part of Book De humani corporis fabrica libri decem : tabulis XCIIX æri incisis ... Laryngeal cartilages, trachea and neck muscles. Error message. Warning: count(): Parameter must be an array or an object that ... Laryngeal cartilages and trachea, with attached neck muscles, shown in isolation, in 6 numbered illustrations. Anterior, ...
This laryngeal muscle activity was associated with laryngeal dilation. There were also marked state-related changes in the ... We studied the EMG activity of three laryngeal muscles in five trained dogs, two of which were completely intact, and three of ... The findings indicate that sleep-wakefulness state exerts important influences on the respiratory activity of laryngeal muscles ... Pairs of electrodes were implanted chronically into the posterior cricoarytenoid muscle (PCA), a laryngeal dilator, ...
We thus recorded the myogram of the whole muscle instead of the activity of a small part, as is done with thin concentric ... This patient had a stoma just above the larynx and the internal laryngeal muscles presented themselves directly. One vocal fold ... LXXXI Cortical Motor Centers of the Laryngeal Muscles in the Cat and Dog *Bosko Milojevic ... This patient had a stoma just above the larynx and the internal laryngeal muscles presented themselves directly. One vocal fold ...
Laryngeal muscles. This results in an altered voice and an increased risk of aspiration pneumonia (inhalation of food, saliva ... The toxin or toxins paralyze muscle tissue - in particular: *Skeletal muscles. This results in the overt paralysis for which ... Respiratory muscles. Initially this results in rapid, shallow breathing with an inability to cough. In advanced stages it is ... Oesophageal muscle. This results in drooling (of saliva) and regurgitation. It increases the risks of choking and aspiration ...
Use of the Intubating Laryngeal Mask Airway: Are Muscle Relaxants Necessary? Janet M. van Vlymen, M.D., F.R.C.P.C.; Margarita ... Use of the Intubating Laryngeal Mask Airway: Are Muscle Relaxants Necessary? You will receive an email whenever this article is ... Use of the Intubating Laryngeal Mask Airway: Are Muscle Relaxants Necessary?. Anesthesiology 8 2000, Vol.93, 340-345. doi: ... THE laryngeal mask airway (LMA) device has become a valuable asset in the management of the difficult airway by providing both ...
... and vibration patterns of the laryngeal recordings which are taken with m... ... Cancers or tumors of the LARYNX or any of its parts: the GLOTTIS; EPIGLOTTIS; LARYNGEAL CARTILAGES; LARYNGEAL MUSCLES; and ... Laryngeal cancer is at risk of recurrence.... Feasibility of Laryngeal Mask Airway Gastro on Patients Undergoing Endoscopic ... Laryngeal Disorders and GERD in Assiut University. Study laryngeal disorders by laryngoscopic examination by two physicians on ...
... , Laryngeal Tumor, Vocal Cord Cancer, Squamous Cell Carcinoma of the Larynx, Laryngeal Cancer, Laryngeal ... Cancers or tumors of the LARYNX or any of its parts: the GLOTTIS; EPIGLOTTIS; LARYNGEAL CARTILAGES; LARYNGEAL MUSCLES; and ... Laryngeal Neoplasms, Neoplasm, Laryngeal, Neoplasms, Laryngeal, larynx neoplasm, LARYNGEAL NEOPL, NEOPL LARYNGEAL, LARYNX NEOPL ... Laryngeal Neoplasm. Laryngeal Neoplasm Aka: Laryngeal Neoplasm, Laryngeal Tumor, Vocal Cord Cancer, Squamous Cell Carcinoma of ...
... compared with limb muscles, V0 values of laryngeal fibres were similar to those of limb muscle fibres containing the same MHC ... compared with limb muscles, V0 values of laryngeal fibres were similar to those of limb muscle fibres containing the same MHC ... isoform composition of single chemically skinned fibres from the vocal muscle of four adult men (age: 55-67 years). Single ... isoform composition of single chemically skinned fibres from the vocal muscle of four adult men (age: 55-67 years). Single ...
Neck muscles, tongue, trachea, and laryngeal cartilages, in 7 numbered illustrations. Superficial dissection of neck muscles. ... Neck Muscles. Trachea. Laryngeal Cartilages. Tongue. Part of Book Opera omnia; siue, Ars medicinalis, in qua cuncta quæ ad ... Muscles of the neck, tongue, trachea and laryngeal cartilages. Return to Book View. ... Quæ per Vidum Vidium iuniorem ... recognita, ac multis, quæ ad eam perficiend » Muscles of the neck, tongue, trachea and ...
Does Laryngeal Muscle Morphology Predict Laryngeal Function in Horses? L. Tulloch. JUL 17, 2013 ... These can include upper respiratory tract disorders, such as laryngeal neuropathy, and lower airway issues, such as those that ... Genome Wide Associations Studies Suggest that Recurrent Laryngeal Neuropathy in Horses Is Highly Polygenic ... Quantitative EMG of the Dorsal Cricoarythenoid Muscle (DCAM) in the Standing, Unsedated Horse ...
Impact of radiotherapy on laryngeal intrinsic muscles Tedla M, Valach M, Carrau R, Weismann P, Profant M, Varga I [Volltext] ... Laryngocele and laryngeal cancer Golabek W, Szymanski M, Czekajska-Chehab E, Morshed K [Volltext] ... Local recurrence of laryngeal carcinoma Skerleva D, Stoyanov S, Rangachev J, Assenova K [Volltext] ...
The cartilage is actually nine separate components called the laryngeal skeleton. These, when moved by the laryngeal muscles, ... Lips: Our complex lip muscles help us form a wide variety of consonant sounds. Try saying a few to see which ones use your lips ... muscles, tendons, tissues, and the hyoid bone. ...
Download Muscle Premium - Human Anatomy, Kinesiology, Bones and enjoy it on your iPhone, iPad, and iPod touch. ... Read reviews, compare customer ratings, see screenshots, and learn more about Muscle Premium - Human Anatomy, Kinesiology, ... New laryngeal muscles added.. ★★★★★ Minor corrections and bug fixes.. * 2.0.0. Jul 18, 2012. ★★★★★ Now with 100s of muscle ... View 600+ muscles, 200+bones, and hundreds of ligaments, bursae, and peripheral nerves. * Study hundreds of moving muscles with ...
  • We examined the interaction of the posterior cricoarytenoid muscle (PCA), which abducts the larynx, and the diaphragm (DIA) in the control of airflow in newborn infants to assess the effect of maturation on respiratory muscle sequence. (biomedsearch.com)
  • The posterior cricoarytenoid (PCA) muscle is one of the intrinsic muscles of the larynx innervated by the recurrent laryngeal nerve. (ajnr.org)
  • The posterior cricoarytenoid (PCA) muscle, an intrinsic muscle of the larynx, has sufficient bulk to be reliably identified on cross-sectional imaging studies. (ajnr.org)
  • 1. Extrinsic muscles attach inside the larynx to the hyoid bone. (lecturio.com)
  • 2. Intrinsic muscles are located inside the larynx that is meant to control stress over glottis and vocal cords. (lecturio.com)
  • The intrinsic muscles of the larynx function to move the vocal cartilages and control tension. (visiblebody.com)
  • When you swallow, the aryepiglottic and thyroepiglottic muscles pull down the epiglottis to close the entry to the larynx, preventing anything from entering the trachea. (visiblebody.com)
  • This patient had a stoma just above the larynx and the internal laryngeal muscles presented themselves directly. (nature.com)
  • These, when moved by the laryngeal muscles, regulate the tension in the larynx, which changes the sound produced. (study.com)
  • Larynx in mammals is characterized by five intrinsic laryngeal muscles with complex movements involved in respiration, airway protection and phonation. (unipd.it)
  • The larynx is contracted by the muscles in the larynx about 30 times per second which interrupts the passage of the air. (pictures-of-cats.org)
  • The recurrent laryngeal nerve gets its name from the fact that it loops below the aorta on its way to the intrinsic muscles of the larynx. (wikipedia.org)
  • The left recurrent laryngeal nerve passes under and around the aorta on its way to the larynx, whereas the right recurrent laryngeal nerve passes under and around the subclavian artery. (wikipedia.org)
  • It descends on the larynx, beneath the sternothyroid muscle, to supply the cricothyroid muscle. (wikipedia.org)
  • It descends to the thyrohyoid membrane, piercing it in company with the superior laryngeal artery, and is distributed to the mucous membrane of the larynx. (wikipedia.org)
  • Above the vocal folds the sensory innervation of the larynx is via the internal laryngeal nerve. (wikipedia.org)
  • Animal experimentation has provided a substantial basis for understanding mammalian laryngeal function, but the highly adapted nature of the human larynx and the functional requirements of speech necessitate some direct human experiments to enhance our knowledge of laryngeal muscle function. (cox2-inhibitor.com)
  • Objectives: This study aimed to determine the laryngeal elevation muscle motor points, evaluate the movement of hyoid bone and larynx during stimulation of the motor points, and examine the potential for treating severe dysphagia by functional electrical stimulation. (elsevier.com)
  • Elevation of the hyoid bone and the larynx in a lateral medullary syndrome patient were achieved with the implanted electrodes, but the upper esophageal sphincter opening was not obtained unless an additional cricopharyngeus muscle block was provided. (elsevier.com)
  • Conclusion: The hyoid bone and larynx were elevated by electrically stimulating the motor points of the laryngeal elevation muscles. (elsevier.com)
  • The data provided evidence of a reflex interconnection between the middle-ear muscles and sensory nervous supply to the larynx. (asha.org)
  • Hie significance of this reflex interconnection between the larynx and middle-ear muscles is unclear at the present time. (asha.org)
  • major functions of the muscles of the larynx? (studyblue.com)
  • Like the mammalian larynx, the syrinx is controlled by muscles whose action influences acoustic parameters and regulates airflow by closing and opening of the airways. (biologists.org)
  • In the context of speech production, the air in our lungs is exhaled via active and passive thoracic and abdominal muscle activity, until it is halted at the larynx (in the case of voiced sounds). (encyclopedia.com)
  • The larynx sits at the top of the trachea and is comprised of muscle, cartilage, and membrane. (encyclopedia.com)
  • Inducible laryngeal obstruction (ILO) describes an inappropriate, transient, reversible narrowing of the larynx in response to external triggers. (ersjournals.com)
  • If the intrinsic muscles and/or the nerve supply of the larynx are not normal laryngeal function is not normal. (vin.com)
  • Finally, neuropathy involving the laryngeal recurrent nerve or myopathy involving the intrinsic muscle of the larynx, and endocrine insufficiency (hypothyroidism) that can induce a polyneuropathy or a polymyopathy are other causes of laryngeal paralysis in the adult dog. (vin.com)
  • The larynx is rotated to expose the thyropharyngeal muscle, which is transected at the dorsocaudal edge of the thyroid cartilage. (vin.com)
  • These muscles contract or relax during the various stages of breathing, swallowing, and speaking, and their action is vital to the normal function of the larynx. (ohsu.edu)
  • Incorrect technique is fatiguing to all the muscles in your larynx. (yahoo.com)
  • To assess laryngeal muscle activity in unilateral vocal fold paralysis (UVFP) patients using laryngeal electromyography (LEMG) and coronal images. (unboundmedicine.com)
  • Method In a previous study, a technique of electromyography (EMG) served to define physiological signs of "voice fatigue" in laryngeal muscles involved in voicing. (asha.org)
  • Changes in suprahyoid muscle activation during normal swallowing and THS with 1/3rd and 2/3rd tongue protrusions using surface electromyography were observed. (springer.com)
  • In animals and human adults, upper airway muscle activity usually precedes inspiratory diaphragm activity. (biomedsearch.com)
  • This trial determines the feasibility of Laryngeal Mask Airway Gastro (Laryngeal Mask Airway) when used on patients who are undergoing endoscopic retrograde cholangiopancreatography for pa. (bioportfolio.com)
  • Use of the Intubating Laryngeal Mask Airway:Are Muscle Relaxants Necessary? (asahq.org)
  • THE laryngeal mask airway (LMA) device has become a valuable asset in the management of the difficult airway by providing both a patent airway and acting as a conduit for blind endotracheal intubation. (asahq.org)
  • However, when a patient is known to have or is suspected of having a difficult airway, the use of muscle relaxants may be relatively contraindicated. (asahq.org)
  • We designed a prospective, randomized, double-blind, placebo-controlled trial to assess the success rate and incidence of complications when performing blind tracheal intubation in patients with normal airway anatomy using the ILMA with or without a muscle relaxant. (asahq.org)
  • Although the dosage of muscle relaxant required for tracheal intubation can ensure the smooth insertion of laryngeal mask airway, laryngeal mask airway is mostly used for short surgery, which is prone to postoperative muscle relaxation residue and prolongs the recovery. (clinicaltrials.gov)
  • Endurance decreases and laryngeal stridor (especially inspiratory) increases as the airway occlusion worsens. (vin.com)
  • This provides an adequate laryngeal airway with only a unilateral tieback. (vin.com)
  • The gag reflex protects the airway and triggers the contraction of the superior laryngeal muscles. (google.com)
  • upper airway including their tongue, and pharyngeal muscles. (coursera.org)
  • Study Design: MHC protein was analyzed using fresh human laryngeal muscles. (elsevier.com)
  • Results: MHC types IIA and lib are the predominant MHC components in human laryngeal muscles. (elsevier.com)
  • Contractile properties and myosin heavy chain isoform composition in single fibre of human laryngeal muscles. (unipd.it)
  • In rat and human laryngeal muscles a different isoform (IIL MyHC) was described [10,11], but it is unclear if this new isoform correspond to EO in rat or to 2B in human or to the two novel isoforms identified by Rossi et al. (unipd.it)
  • 11] Toniolo L, Macchi V, Porzionato A, Paoli A, Marchese-Ragona R, De Caro R, Reggiani C. Myosin heavy chain isoforms in human laryngeal muscles: an expression study based on gel electrophoresis. (unipd.it)
  • MU recruitment in thyroarytenoid/lateral cricoarytenoid (TA/LCA) muscle complex results were 1+ for 4 patients, 2+ for 5, 3+ for 6, and 4+ for 6. (unboundmedicine.com)
  • As such, recurrent laryngeal nerve palsy should not only result in paralysis of the true vocal cord or thyroarytenoid muscle but also in a similar change in the PCA muscle. (ajnr.org)
  • Each study was also reviewed for the presence or absence of other features of vocal cord paralysis: thyroarytenoid muscle atrophy, anteromedial deviation of the arytenoid cartilage, an enlarged piriform sinus and laryngeal ventricle, and a paramedian cord. (ajnr.org)
  • The imaging features of vocal cord paralysis include atrophy of the thyroarytenoid muscle, anteromedial deviation of the arytenoid cartilage, enlarged laryngeal ventricle, enlarged piriform sinus, and a paramedian vocal cord (1-3) . (ajnr.org)
  • This muscle is innervated by the recurrent laryngeal nerve branch of the vagus nerve, the same nerve that innervates the thyroarytenoid muscle, which accounts for the bulk of the true vocal cord. (ajnr.org)
  • Objectives: Myosin heavy chain (MHC) composition of human thyroarytenoid (TA), lateral cricoarytenoid (LCA), interarytenoid (LA), vocalis, posterior cricoarytenoid (PCA), and cricothyroid muscles were examined using sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and Western bolt techniques. (elsevier.com)
  • The vocalis is an intrinsic laryngeal muscle comprised of fibers from the thyroarytenoid muscle. (visiblebody.com)
  • Pairs of electrodes were implanted chronically into the posterior cricoarytenoid muscle (PCA), a laryngeal dilator, cricothyroid (CT), and thyroarytenoid (TA), a laryngeal adductor. (ox.ac.uk)
  • 2] Malmgren LT, Lovice DB, Kaufman MR. Age-related changes in muscle fiber regeneration in the human thyroarytenoid muscle. (unipd.it)
  • Three-dimensional compartmentalization of myosin heavy chain and myosin light chain isoforms in dog thyroarytenoid muscle. (unipd.it)
  • The presence of spindles demonstrates differences in motor control as compared to the thyroarytenoid and posterior cricoarytenoid muscles. (cox2-inhibitor.com)
  • Recent surgical advances include recurrent laryngeal nerve denervation and reinnervation, as well as thyroarytenoid (TA) and lateral cricoarytenoid myectomy. (medscape.com)
  • A considerable number of the fibers of the thyroarytenoid muscle are prolonged into the aryepiglottic fold, where some of them become lost, while others continue to the margin of the epiglottis. (wikipedia.org)
  • This information forms an important basis for characterization of normal contraction speeds and fatigue rates, and whether these characteristics change in voice disorders such as vocal EDNRB fold paralysis, paresis, atrophy, and muscle tension dysphonia. (cox2-inhibitor.com)
  • http://jslhr.pubs.asha.org/article.aspx?articleid=1768836 Reflex Contraction of Middle-Ear Muscles Secondary to Stimulation of Laryngeal Nerves Electromyographic evidence of middle-ear muscle activity in association with vocalization has been reported in the waking cat and in man. (asha.org)
  • Reflex contraction of the stapedius and tensor tympani muscles was elicited by electrical stimulation of the internal branch of the superior laryngeal nerve. (asha.org)
  • The reflex discharges in the tympanic muscles occurred in association with reflex contraction of the cricothyroid muscle. (asha.org)
  • Although not conclusive, the reflex contraction of the middle-ear muscles elicited by internal laryngeal nerve stimulation appeared to be bilateral. (asha.org)
  • A dystonia is a movement disorder characterized by inappropriate contraction (tightening) of muscle groups. (ohsu.edu)
  • A muscle that on contraction draws a part away from the median plane of the body or the axial line of an extremity. (thefreedictionary.com)
  • These results show that large numbers of superfast fibre types are present in intrinsic syringeal muscles of a songbird, providing further confirmation of rapid contraction kinetics. (biologists.org)
  • At the signal of an impulse traveling down the nerve, the muscle fiber changes chemical energy into mechanical energy, and the result is muscle contraction. (thefreedictionary.com)
  • Unlike the involuntary muscles, which can remain in a state of contraction for long periods without tiring and are capable of sustained rhythmic contractions, the voluntary muscles are readily subject to fatigue. (thefreedictionary.com)
  • The contraction and relaxation of cardiac muscle continues at a rhythmic pace until death unless the muscle is injured in some way. (thefreedictionary.com)
  • Voluntary muscles extend from one bone to another, cause movements by contraction, and work on the principle of leverage. (thefreedictionary.com)
  • These are mainly considered here as masticatory loads due to the contraction of paired primary chewing muscles such as masseter, temporalis, and pterygoid that attach to cranial elements. (wiley.com)
  • Spasmodic dysphonia (SD) is a chronic voice disorder of unknown origin that is characterized by excessive or inappropriate contraction of laryngeal muscles during speech. (medscape.com)
  • Advanced computing solutions for analysis of laryngeal disorders. (bioportfolio.com)
  • Immunohistochemical analysis of laryngeal muscles in normal horses and horses with subclinical recurrent laryngeal neuropathy. (unipd.it)
  • Furthermore, this understanding will likely improve the upcoming analysis of laryngeal reinnervation as well as the RTA 402 development of a laryngeal pacemaker. (cox2-inhibitor.com)
  • However, there is no discernible effect on the timing of neural impulses to the muscles these two nerves serve. (wikipedia.org)
  • By comparison with the recurrent laryngeal nerves, the superior laryngeal nerve takes a more direct route on the way to the cricothyroid muscles. (wikipedia.org)
  • Rectangular-wave electrical pulses of 0.10 msec duration (one to two volts) were used to stimulate the ipsilateral and contralateral recurrent and internal laryngeal nerves in anesthetized cats ( n = 20). (asha.org)
  • Lower motor neurons (LMNs) begin in the brainstem (cranial nerves) or spinal cord (spinal nerves) and project to the muscles on the same side of the body. (encyclopedia.com)
  • This is made possible by the motor and sensory nerves which serve the muscles. (thefreedictionary.com)
  • Vocal fold movements are a result of the coordinated construction of various muscles that are controlled by the brain through a specific set of nerves. (selfgrowth.com)
  • Wallerian degeneration of the laryngeal recurrent nerves and abnormalities of the nucleus ambiguus are both present. (vin.com)
  • Locate and trace the distribution of the great auricular , transverse cervical , lesser occipital (may not be able to see yet) and supraclavicular nerves (cutaneous branches of the cervical plexus) which emerge along the posterior border of the sternocleidomastoid muscle. (umich.edu)
  • Expose the muscle throughout its length but do not destroy the superficial veins or nerves. (umich.edu)
  • The nerves and arteries enter the strap muscles on their lateral borders, so care must be taken while cleaning the muscles to preserve their nerves. (umich.edu)
  • All intrinsic laryngeal muscles except the cricothyroids are innervated by the recurrent laryngeal nerve. (wikipedia.org)
  • Conclusion A brief rise in voice tremor can correspond to a critical change in laryngeal muscle tissues seen as a condition where continued vocal effort can increase the risk of lesions or other conditions affecting voice. (asha.org)
  • Skeletal muscle metastases from cancer occur rarely and there are no clear guidelines for appropriate work-up and management of these lesions. (biomedcentral.com)
  • Otolaryngologists can be experts in managing specific laryngeal lesions to improve voice. (springer.com)
  • Lesions to the laryngeal recurrent nerve or to the cricoarytenoideus dorsalis muscle result in laryngeal paralysis in dogs and cats. (vin.com)
  • The laryngeal muscles are a set of muscles in the anterior neck responsible for sound production. (visiblebody.com)
  • Laryngeal cartilages and trachea, with attached neck muscles, shown in isolation, in 6 numbered illustrations. (utoronto.ca)
  • Superficial dissection of neck muscles. (utoronto.ca)
  • Deep dissection of the the neck, showing laryngeal cartilages. (utoronto.ca)
  • Botox is injected into the laryngeal muscles via the neck (just under the adam's apple) using EMG guidance or through the mouth using a special needle that curves over the tongue. (ohsu.edu)
  • The production of speech sounds requires that head, neck, and trunk muscles work in a coordinated fashion. (encyclopedia.com)
  • No injuries of anterior muscles of neck or laryngeal structures. (lewrockwell.com)
  • The SLN (Superior Laryngeal Nerve) may also be injured during head or neck surgery. (selfgrowth.com)
  • A cranial mediastinal or neck mass stretching or compressing the laryngeal recurrent nerve can induce a laryngeal paralysis. (vin.com)
  • Trauma to the laryngeal recurrent nerve during dogfights or during surgery in the neck is a cause of laryngeal paralysis. (vin.com)
  • Using a sharp scalpel, remove the remaining skin of the neck below the mandible, being careful to preserve the delicate underlying muscle layer. (umich.edu)
  • 4. Identify the triangles of the neck and clean the strap muscles and reflect them to expose the ansa cervicalis and the thyroid gland. (umich.edu)
  • Recurrent laryngeal nerve stimulation is delivered by applying electric charge from an electrode in the form of a probe or an indwelling device to the intact neck skin at specific points. (google.com)
  • Atrophy of the PCA muscle may be commonly documented on CT and MR studies in patients with recurrent laryngeal nerve palsy and vocal cord paralysis, and therefore should be part of the constellation of imaging features of vocal cord paralysis. (ajnr.org)
  • As such, atrophy of this muscle should also be detectable in a patient with vocal cord paralysis. (ajnr.org)
  • The detection of atrophy of the PCA muscle on CT and MR examinations in a patient with a history of vocal cord paralysis may be helpful when other imaging features of vocal cord paralysis are absent or equivocal. (ajnr.org)
  • In this study, we reviewed the CT and/or MR images of 20 patients with vocal cord paralysis, documenting the frequency of the various findings of vocal cord paralysis, with particular emphasis on our ability to detect atrophy of the PCA muscle. (ajnr.org)
  • A superior laryngeal nerve palsy changes the pitch of the voice and causes an inability to make explosive sounds due to paralysis of the cricothyroid muscle. (wikipedia.org)
  • Recurrent laryngeal nerve (RLN) injury results in true vocal-fold paresis or paralysis. (medscape.com)
  • Vocal fold paresis (or vocal cord paralysis) is the result of abnormal nerve input to the muscles within the voice box. (selfgrowth.com)
  • In the case of the disruption of the human voice, vocal cord paralysis is the result of nerve-to-muscle interruption within the muscles of the voice box, causing the vocal cords to malfunction, or to not function at all. (selfgrowth.com)
  • Congenital and acquired forms of laryngeal paralysis have been recognized in dogs and cats. (vin.com)
  • Congenital laryngeal paralysis has been reported in Bouvier des Flandres, bull terrier, Dalmatian, Rottweiler and Huskies. (vin.com)
  • Laryngeal paralysis has a hereditary transmission in Bouvier des Flandres with an autosomal dominant trait. (vin.com)
  • Dogs with congenital laryngeal paralysis are clinical at an early age (before one year old) than dogs with acquired laryngeal paralysis. (vin.com)
  • Acquired laryngeal paralysis is most commonly reported in Labrador retriever, Golden retriever, St Bernard and Irish Setter at an age of 9 years old. (vin.com)
  • Diseases and conditions may contribute to laryngeal paralysis. (vin.com)
  • Laryngeal paralysis in the cat has been diagnosed after bilateral thyroidectomy. (vin.com)
  • Laryngeal paralysis can be accompanied with various degrees of dysphagia which significantly enhances the probability of aspiration after surgical correction of the laryngeal paralysis. (vin.com)
  • The physical examination of dogs with laryngeal paralysis is fairly unremarkable. (vin.com)
  • Laryngeal paralysis has inconsistent correlation with hypothyroidism. (vin.com)
  • How Do I Treat Laryngeal Paralysis? (vin.com)
  • This procedure has been used successfully to treat laryngeal paralysis in cats and dogs. (vin.com)
  • Unilateral arytenoid lateralization is sufficient to reduce clinical signs of laryngeal paralysis. (vin.com)
  • Exercise-induced laryngeal obstruction (EILO) is common in young people with exertional breathing difficulties. (frontiersin.org)
  • Background Exercise-induced laryngeal obstruction (EILO) is common in athletes and presents with dyspnoea, chest tightness, inspiratory stridor and sometimes panic reactions. (uib.no)
  • Introduction: Exercise induced laryngeal obstruction (EILO) is relatively common in adolescents, with symptoms often confused with exercise induced asthma. (uib.no)
  • Which parts of the laryngeal skeleton are Elastic cartilages? (brainscape.com)
  • Which parts of the laryngeal skeleton are Hyaline cartilages? (brainscape.com)
  • Various muscles wrap the cartilages which produce movements at the cricoarytenoid and cricothyroid joints. (lecturio.com)
  • The thyroid cartilage is the largest of the nine laryngeal cartilages. (visiblebody.com)
  • What are laryngeal cartilages bound by? (flashcardmachine.com)
  • what are laryngeal cartilages lined with? (flashcardmachine.com)
  • The cricoarytenoideus dorsalis muscle abducts the arytenoid cartilages at each inspiration. (vin.com)
  • Laryngeal surgery is directed at removing or repositioning laryngeal cartilages that obstruct the rima glottidis. (vin.com)
  • The sternohyoid muscle is retracted ventrally to expose the lateral aspect of the thyroid and cricoid cartilages. (vin.com)
  • An assistant should be available to observe per os the size of the laryngeal opening achieved to ensure that adequate abduction of the laryngeal cartilages has been obtained. (vin.com)
  • During phonation, the vocal folds are brought together by muscles attached to the arytenoids (cartilages structure). (ohsu.edu)
  • The cricothyroid muscles are innervated by the superior laryngeal nerve. (wikipedia.org)
  • Simultaneous electromyographic recordings were obtained from the stapedius, tensor tympani, and cricothyroid muscles. (asha.org)
  • However, syringeal muscles are composed of two fibre types which raises questions about the neuromuscular control of this heterogeneous muscle architecture. (biologists.org)
  • For example, in brown thrashers ( Toxostoma rufum ) electromyographic (EMG) recordings from syringeal muscles during spontaneous singing suggest that the tracheobronchial muscles regulate airflow by adducting (m. tracheobronchialis dorsalis) and abducting (m. tracheobronchialis ventralis) the lateral labium ( Goller and Suthers, 1996a ). (biologists.org)
  • The superior laryngeal nerve is a branch of the vagus nerve. (wikipedia.org)
  • Control over these muscles is provided by two branches of the vagus nerve: the recurrent laryngeal nerve and the superior laryngeal nerve. (ohsu.edu)
  • Inducible laryngeal obstruction: Endoscopic quantitative analysis of glottic aperture. (bioportfolio.com)
  • Exercise-related breathing problems caused by laryngeal airflow obstruction (EILO) are relatively common in otherwise healthy young individuals. (frontiersin.org)
  • This description of vocal cord dysfunction (VCD) highlighted the importance of functional laryngeal obstruction ( i.e. without apparent structural or neurological cause) as a distinct clinical entity. (ersjournals.com)
  • Access detailed definitions for all structures, including details on origins and insertions, muscle actions, blood supply, and innervation. (apple.com)
  • Lyon, M.J. (2000) Nonadrenergic innervation of the rat laryngeal vascular supply. (upstate.edu)
  • Identify and list the attachments, innervation and action of the sternocleidomastoid, digastric and infrahyoid (strap) muscles. (umich.edu)
  • Seyyedeh Maryam Khoddami, Noureddin Nakhostin Ansari, Farzad Izadi, and Saeed Talebian Moghadam, "The Assessment Methods of Laryngeal Muscle Activity in Muscle Tension Dysphonia: A Review," The Scientific World Journal , vol. 2013, Article ID 507397, 6 pages, 2013. (hindawi.com)
  • The movements of the laryngeal skeleton open and close the glottis and regulate the degree of tension in the vocal folds. (visiblebody.com)
  • Further, extrafusal fiber characteristics implicate IA muscle involvement in muscle tension dysphonia and adductor spasmodic dysphonia. (cox2-inhibitor.com)
  • A semiparametric effect compartment pharmacodynamic model was fit to values for rapacuronium plasma concentrations and twitch tension of the adductor pollicis and laryngeal adductors. (nih.gov)
  • The steady state rapacuronium plasma concentration that depressed twitch tension by 50% and the Hill factor were similar for the two muscles. (nih.gov)
  • What are muscle tension dysphonias? (brainscape.com)
  • What are the two types of muscle tension dysphonia? (brainscape.com)
  • What do primary muscle tension dysphonias result from? (brainscape.com)
  • If a voice has a rough, unmusical sound due to excessive laryngeal tension, what quality disorder might we classify that as? (brainscape.com)
  • Rigidity due to laryngeal muscle tension, often accompanied by a vocal wobble. (voiceteacher.com)
  • Since this muscle adjusts the tension of the vocal folds for high notes especially during singing. (selfgrowth.com)
  • Muscle tension dysphonia, or voice strain, can occur even when there is no damage to your vocal cords. (dukehealth.org)
  • If your voice is tired, your throat feels tight, or it hurts to talk, you may have muscle tension dysphonia, or voice strain. (dukehealth.org)
  • Muscle tension dysphonia can make your voice sound strained and feel uncomfortable when you talk. (dukehealth.org)
  • Muscle tension dysphonia can happen when you've been sick and developed an injury to the vocal cords, such as laryngitis or swelling of the vocal cords. (dukehealth.org)
  • Other factors that may contribute to muscle tension dysphonia include excessive talking without breaks, screaming, talking loudly in noisy environments, or habitually speaking at a pitch that is too high or too low for you. (dukehealth.org)
  • As part of our comprehensive voice evaluation , we use videolaryngostrobscopy, a highly specialized exam that can uncover the patterns of muscle strain that cause muscle tension dysphonia. (dukehealth.org)
  • nevertheless, current research indicates that classification may be deceptive.1 Although each one of the intrinsic laryngeal muscle groups has primary jobs in laryngeal function, all intrinsic laryngeal muscle groups are necessary for what have already been thought as traditional adductor jobs (ie, phonation) and abductor jobs (ie, rapid deep breathing). (cox2-inhibitor.com)
  • Stemple et al introduced a set of exercises based on a physiologic model of voice therapy which include a series of voice manipulations that were designed to strengthen and balance the laryngeal musculature as well as the coordinated interaction of respiration, phonation and resonance. (springer.com)
  • The ability of CT and MR imaging to depict denervation atrophy in the PCA muscle in patients with recurrent laryngeal nerve palsy was evaluated. (ajnr.org)
  • Muscle Nerve 39: 91-94, 2009. (lu.se)
  • author = {Häger, Mattias and Durbeej-Hjalt, Madeleine}, issn = {0148-639X}, language = {eng}, number = {1}, pages = {91--94}, publisher = {John Wiley & Sons}, series = {Muscle and Nerve}, title = {Intrinsic laryngeal muscles are spared from degeneration in the dy(3k)/dy(3k) mouse model of congenital muscular dystrophy type 1A. (lu.se)
  • The superior laryngeal nerve consists of two branches: the internal laryngeal nerve (sensory), which supplies sensory fibers to the laryngeal mucosa, and the external laryngeal nerve (motor), which innervates the cricothyroid muscle. (wikipedia.org)
  • Because the aorta is inferior to the subclavian artery, the left recurrent laryngeal nerve is a bit longer than the right recurrent laryngeal nerve. (wikipedia.org)
  • The superior laryngeal nerve descends, by the side of the pharynx, behind the internal carotid artery, and divides into two branches -the external laryngeal nerve and the internal laryngeal nerve. (wikipedia.org)
  • The external laryngeal nerve is the smaller, external branch. (wikipedia.org)
  • The external laryngeal nerve gives branches to pharyngeal plexus and the superior portion of the inferior pharyngeal constrictor, and communicates with the superior cardiac nerve behind the common carotid artery. (wikipedia.org)
  • The internal laryngeal nerve is the internal branch. (wikipedia.org)
  • Below the vocal folds it is by way of branches of the recurrent laryngeal nerve. (wikipedia.org)
  • Damage to the superior laryngeal nerve leaves the vocal cord abducted and poses an aspiration risk. (wikipedia.org)
  • Irritation of the internal laryngeal nerve results in uncontrolled coughing - usually as a result of food or water in the laryngopharynx. (wikipedia.org)
  • Potential major complications of thyroid surgery include bleeding, injury to the recurrent laryngeal nerve (see the first image below), hypoparathyroidism, hypothyroidism, thyrotoxic storm, injury to the superior laryngeal nerve (see the second image below), and infection. (medscape.com)
  • Anatomy of the recurrent laryngeal nerve (RLN). (medscape.com)
  • Superior laryngeal nerve (SLN). (medscape.com)
  • The superior laryngeal nerve carries signals to the cricothyroid muscle. (selfgrowth.com)
  • Dedo first introduced recurrent laryngeal nerve section for the treatment of spasmodic dysphonia (SD) in 1976. (medscape.com)
  • [ 2 ] Other investigators modified this approach by crushing the recurrent laryngeal nerve. (medscape.com)
  • The laryngeal recurrent nerve innervates this muscle. (vin.com)
  • This leads to the hoarseness, aspiration, and other symptoms associated with laryngeal nerve injury. (ohsu.edu)
  • A method and devices for transcutaneous or transmucosal stimulation of the recurrent laryngeal nerve are provided. (google.com)
  • 2. A device as described in claim 1, further comprising means for generating an electrical current to the leads such that the electrodes produce an electrical stimulus, wherein the electrical stimulus has a frequency which is selected to evoke a predetermined amount of stimulation in at least one laryngeal muscle and a current effective to selectively stimulate at least a portion of the recurrent laryngeal nerve. (google.com)
  • Direct stimulation of the recurrent laryngeal nerve (RLN) results in a characteristic movement of the vocal cords that is frequency dependent. (google.com)
  • Diagram of the posterolateral view of the laryngeal skeleton (right thyroid lamina removed) shows the PCA muscle ( middle arrow ) arising from the cricoid lamina ( lower arrow ) posteriorly and inserting on the arytenoid cartilage ( upper arrow ). (ajnr.org)
  • What makes up the laryngeal skeleton? (brainscape.com)
  • Under this condition, a fine needle aspiration punction (FNAP) was done in another hospital, and cytological result was neolplasm of skeleton muscle cells, suggested by adult rhabdomyoma (Picture 3). (arquivosdeorl.org.br)
  • The cartilage is actually nine separate components called the laryngeal skeleton. (study.com)
  • The PCA muscle, the only abductor of the vocal cords, is readily identifiable on cross-sectional CT and MR studies as a triangular muscle bundle along the posterior surface of the cricoid cartilage ( Figs 1 and 2 ). (ajnr.org)
  • This muscle arises along the posterior surface of the cricoid cartilage and extends superolaterally to insert on the muscular processes of the arytenoid cartilage (4, 5) ( Fig 2 ). (ajnr.org)
  • Also, locate the hyoid bone , laryngeal prominence , thyroid cartilage , cricoid cartilage and trachea . (umich.edu)
  • A new concept in laryngeal muscle: multiple myosin isoform types in single muscle fibers of the lateral cricoarytenoid. (unipd.it)
  • A 52-year-old male with a history of laryngeal cancer was found on routine physical examination to have a 2 cm subcutaneous nodule in the left mid-abdomen approximately 2 cm superior and 4 cm lateral to the umbilicus. (biomedcentral.com)
  • This occurs when the muscles which close the vocal folds (thyroarytenoids and lateral cricoarytenoids) contract with excess force. (ohsu.edu)
  • Lateral rectus muscle, one of the extraocular muscles. (thefreedictionary.com)
  • In clinical practice, referred to as the lateral rectus muscle. (thefreedictionary.com)
  • Amyotrophic lateral sclerosis (ALS), commonly called Lou Gehrig's disease, is a progressive neuromuscular condition characterized by weakness, muscle wasting, fasciculations and increased reflexes. (aafp.org)
  • Reflux of acid from the stomach is another frequent cause of laryngeal inflammation. (ohsu.edu)
  • hissing respiration from spasm of laryngeal and bronchial muscles). (homeoint.org)
  • Lyon, M.J., L.Steer, and L.T. Malmgren (2007) Stereological Estimates Indicate That Aging Does Not Alter the Capillary Length Density in the Human Posterior Cricoarytenoid Muscle. (upstate.edu)
  • Extrinsic laryngeal muscles" by Henry Vandyke Carter. (lecturio.com)
  • To describe a case of rhabdomioma affecting extrinsic laryngeal muscle, discussing diagnoses and therapeutic aspects. (arquivosdeorl.org.br)
  • We will introduce below a case of a patient with adult rhabdomyomas affecting extrinsic laryngeal muscle, image and cytological (aspiration punction) findings, surgical access and histopathological aspects related to the tumor as well. (arquivosdeorl.org.br)
  • Developmental changes in sequential activation of laryngeal abductor muscle and diaphragm in infants. (biomedsearch.com)
  • In wakefulness (W), slow wave sleep (SWS) and rapid eye movement (REM) sleep the EMGs of the PCA and CT muscles increased in intensity during diaphragm activation, with varying levels of basal activity during expiration. (ox.ac.uk)
  • Results: At pre-test, the study participants had deficient knowledge and negative beliefs regarding the use of muscle relaxants with laryngeal mask airways. (depaul.edu)
  • 7,8 All clinical studies with the ILMA device have used intubating doses of nondepolarizing muscle relaxants "to provide optimum conditions. (asahq.org)
  • Although anecdotal reports have described successful intubations using the ILMA without the use of muscle relaxants, 4,9 the effect of these drugs on the success rate when using this device for tracheal intubation has not been previously studied. (asahq.org)
  • Nondepolarizing muscle relaxants differ in their time course at the laryngeal adductors and the adductor pollicis, a result of differences in equilibration delays between plasma and effect sites, the sensitivity of each muscle to the relaxant, and the steepness of the concentration-effect relation at each muscle (the Hill factor). (nih.gov)
  • Unlike the finding for other nondepolarizing muscle relaxants, the laryngeal muscles are not resistant to rapacuronium. (nih.gov)
  • The dosages of muscle relaxants used in various researches vary greatly. (clinicaltrials.gov)
  • It is necessary to use muscle relaxants in laryngeal mask incubation under non-special circumstances. (clinicaltrials.gov)
  • Sevoflurane does not prevent the increase in IOP after intubation without muscle relaxants. (nih.gov)
  • At the very top of the trachea, just below the mouth and nasal cavity, we have a strange assortment of moveable cartilage, muscles, tendons, tissues, and the hyoid bone. (study.com)
  • Using a method developed for this study, the objective was to perform a quantitative analysis of glottic aperture during the respiratory cycle in subjects suspected of having inducible laryngeal obstr. (bioportfolio.com)
  • Note thin black line of fat between muscle and pharynx ( arrowhead indicates inferior constrictor muscle). (ajnr.org)
  • Nonnasal sounds are produced when the soft palate (a muscle) moves upward and backward to make contact with the pharyngeal walls to block air from escaping through the nasal port. (encyclopedia.com)
  • Dysfunction of striated laryngeal and pharyngeal muscles was a prominent clinical finding. (annals.org)
  • The disarticulated arytenoid cartilage is only attached to the vocal cord, aryepiglottic fold and laryngeal mucosa. (vin.com)
  • Invasion through the laryngeal mucosa is avoided. (vin.com)
  • Early laryngeal cancer can be treatment by laser surgery or radiotherapy, intermediate and advanced laryngeal carcinoma mainly surgical treatment. (bioportfolio.com)
  • We report here on a patient that had been previously treated for squamous cell laryngeal cancer with surgical resection and adjuvant systemic chemotherapy that presented with a metastasis to the rectus abdominis muscle without evidence of recurrent disease at the primary site. (biomedcentral.com)
  • The aim of the study is to assess the efficiency and limitations of ultrasound in detecting and characterizing laryngeal anatomy and study of some laryngeal disorders and their ultrasonogr. (bioportfolio.com)
  • Incredible 3D gross human anatomy models: Over 600 muscles and more than 200 bones. (apple.com)
  • Test your knowledge by taking dozens of muscle and bone anatomy quizzes. (apple.com)
  • iMedical Apps calls Muscle Premium "incredibly impressive at highlighting complex anatomy…The combination of impressive detail and 3D graphics mean this app is a market leader. (apple.com)
  • Laryngeal image/video analysis is discussed in four main categories: segmentation of vocal folds, classification of vocal fold disorders, vocal fold vibration analysis, and vocal fold image stitching. (bioportfolio.com)
  • The rhesus monkey ( Macaca mulatta ) is an excellent model to study this hypothesis because its vocal repertoire is well known, and a vocalization such as the 'coo' call ( Fig. 1 ) shows a very specific rising-and-falling f 0 contour that can only be achieved if laryngeal intrinsic muscles stiffen the vocal fold tissue to the correct stress level and simultaneously compensate for stress relaxation if necessary. (biologists.org)
  • Controlled movements involve two opposing muscles: the agonist muscle produces the main action, while the antagonist muscle produces the opposite action to a lesser degree. (thefreedictionary.com)
  • Observing laryngeal movements of stutterers. (springer.com)
  • Histologically it is important to differentiate the rhabdomioma from normal skeletal muscle, besides the rhabdomiossarcoma and granular cell tumors. (arquivosdeorl.org.br)
  • Skeletal muscle metastases from tumors are a rare occurrence and can present difficult management decisions. (biomedcentral.com)
  • Additionally, skeletal muscle metastases and treatment considerations are discussed. (biomedcentral.com)
  • But sk, skeletal muscle, voluntary muscle we can control. (coursera.org)
  • Palpation of the muscle mass may reveal skeletal muscle atrophy in cases of polyneuropathy. (vin.com)
  • Clinical diagnosis of voice pathologies is performed by analyzing audio, color, shape, and vibration patterns of the laryngeal recordings which are taken with medical imaging devices such as video-laryngostroboscope, direct laryngoscopy, and high-speed videoendoscopes. (bioportfolio.com)
  • Clinical stage of laryngeal carcinoma and lost time at the moment of diagnosis with 15-year-long interval. (bioportfolio.com)
  • Although they mimicked asthma, these clinical features arose from inappropriate or "paradoxical" laryngeal closure. (ersjournals.com)
  • Since that time, our understanding of disorders associated with paroxysmal laryngeal closure has evolved, and there are currently a large number of published reports describing the epidemiology, aetiology, clinical characteristics and treatment options. (ersjournals.com)
  • In this presentation, I will present the clinical data and investigation of outbreaks of bilateral recurrent laryngeal neuropathy that occurred in 2016 in the UK, involving 10s to 100s of horses. (ivis.org)
  • Objectives: The purpose of this study was to evaluate the knowledge and beliefs of anesthesia providers about muscle relaxant use with laryngeal mask airways before and after reviewing an evidence-based educational module. (depaul.edu)
  • Method: A descriptive online survey research design was utilized to determine Illinois Association of Nurse Anesthetist members' knowledge and beliefs regarding muscle relaxant use with laryngeal mask airways. (depaul.edu)
  • Conclusion: This study found that study participants have a lack of knowledge and negative beliefs towards muscle relaxant use with laryngeal mask airways prior to an educational intervention. (depaul.edu)
  • There is a need for additional studies that would support a position statement for a standard of practice and policy making for muscle relaxant use with laryngeal mask airways in contemporary anesthesia practice. (depaul.edu)
  • The intention of this study is to compare the performance of the single-use I-gel laryngeal mask with the classic laryngeal mask in 50 patients with a BMI>25 during elective surgery. (bioportfolio.com)
  • Previous studies have shown that the amount of muscle relaxant required for laryngeal mask intubation is smaller than that required for endotracheal intubation. (clinicaltrials.gov)
  • If the laryngeal mask insertion condition of this patient is satisfactory, the next patient will use the lower dose. (clinicaltrials.gov)
  • Human laryngeal muscle is characterized by a predominance of fast-type MHCs in laryngeal closing muscle and mixed fast- slow type MHCs in respiratory and phonatory muscle groups. (elsevier.com)
  • Respiratory activity of laryngeal muscles in awake and sleeping dogs. (ox.ac.uk)
  • Experiments were conducted in adult dogs to determine the respiratory activity of laryngeal muscles during wakefulness and sleep. (ox.ac.uk)
  • The adductor muscles (TA) were not active during expiration, except during alert W. There were no consistent differences in respiratory activity of the laryngeal muscles between the two intact dogs and those with a tracheal stoma (whether or not an endotracheal tube was in place), nor was laryngeal muscle activity affected by the subsequent creation of a tracheal stoma in the two intact dogs. (ox.ac.uk)
  • The findings indicate that sleep-wakefulness state exerts important influences on the respiratory activity of laryngeal muscles in the adult dog. (ox.ac.uk)
  • A similar role for laryngeal narrowing in modulating exercise airways resistance and the respiratory cycle volume-time course is postulated, yet remains unstudied in COPD. (bmj.com)
  • Conclusions Dynamic laryngeal narrowing during expiration is prevalent in patients with COPD and is related to disease severity, respiratory duty cycle and exercise capacity. (bmj.com)
  • Other capabilities of the LSD lab include stroboscopic laryngeal imaging (ridged and flex-scoping), EGG, acoustic analyses of speech, and respiratory kinematics. (uky.edu)
  • In the spring of 2016, 2 groups of horses in the south of England presented with varying degrees of bilateral laryngeal neuropathy. (ivis.org)
  • My doctors are stumped, I"ve had all sorts of tests, the last to be a muscle biopsy in the area where the spasm occur the most. (medicinenet.com)
  • The adductor muscles - TA, LCA, and IA - have a higher percentage of type IIB MHC and a lower percentage of type I when compared with the abductor - PCA. (elsevier.com)
  • Abductor SD involves the muscles which open the vocal folds(posterior cricoarytenoids). (ohsu.edu)
  • A "mixed" form involving both the abductor and adductor muscles also exists. (ohsu.edu)
  • Methods: Laryngeal muscles excised from cadavers were processed for SDS-PAGE. (elsevier.com)
  • art methods and reveals open issues and problems of computing solutions for analysis and identification of laryngeal disorders. (bioportfolio.com)
  • Here we discuss the incidence of distant metastases from laryngeal cancer and appropriate screening methods. (biomedcentral.com)
  • Methods: The motor points of the laryngeal elevation muscles were anatomically determined from four cadavers. (elsevier.com)
  • Verdolini-Marston K, Burke MK, Lessac A, Glaze L, Caldwell E. Preliminary study of two methods of treatment for laryngeal nodules. (springer.com)
  • In the present study we aimed to determine the functional properties and the myosin heavy chain (MHC) isoform composition of single chemically skinned fibres from the vocal muscle of four adult men (age: 55-67 years). (unipd.it)
  • Expression of myosin heavy chain mRNA in rat laryngeal muscles. (unipd.it)
  • Expression of extraocular myosin heavy chain in rabbit laryngeal muscle. (unipd.it)
  • 9] Briggs MM, Schachat F. Early specialization of the superfast myosin in extraocular and laryngeal muscles. (unipd.it)
  • Atypical myosin heavy chain in rat laryngeal muscle. (unipd.it)
  • Each muscle cell is filled with parallel actin and myosin filaments. (thefreedictionary.com)
  • The twitch tensions of the adductor pollicis and the laryngeal adductors (via a tracheal tube cuff positioned at the vocal cords) were measured in 10 volunteers who were anesthetized with propofoL Rapacuronium, 1.5 mg/kg, was given and blood samples were collected. (nih.gov)