Laryngeal Muscles
Larynx
Laryngeal Nerves
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.
Recurrent Laryngeal Nerve
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.
Laryngismus
Vocal Cords
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.
Phonation
Respiratory Physiological Processes
Myosin Heavy Chains
Muscle Contraction
Electromyography
Nervous System Physiological Phenomena
Muscle Proteins
Muscle, Smooth
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)
Muscle, Skeletal
Androgens
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.
Sex Characteristics
Muscle Fibers, Skeletal
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.
Xenopus laevis
Dihydrotestosterone
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)
current research indicates that classification may be deceptive.1 Although each one of the intrinsic laryngeal muscle groups...
Myosin heavy chain composition in human laryngeal muscles<...
Intrinsic laryngeal muscles are spared from degeneration in the dy(3k)/dy(3k) mouse model of congenital muscular dystrophy type...
Respiratory activity of laryngeal muscles in awake and sleeping dogs. - Experimental Medicine Division
muscle spindle | Regulation of COX2 Expression in Mouse Mammary Tumor Cells
Lateral cricoarytenoid muscle - Wixpert
神経・筋接合部の三重染色法とそのヒト内喉頭筋の観察への応用 - Tamura, Koichi - Tokushima University Researchers - Tokushima University Institutional...
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Laryngeal adductor reflex and pharyngeal squeeze as predictors of laryngeal penetration and aspiration<...
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Cricoarytenoid arthritis synonyms, cricoarytenoid arthritis antonyms - FreeThesaurus.com
Onset and Duration of Rocuronium and Succinylcholine at the Adductor Pollicis and Laryngeal Adductor Muscles in Anesthetized...
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Repositorio da Producao Cientifica e Intelectual da Unicamp: Musculos laringeos distroficos : proteção a mionecrose, expressao...
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LARENKS VE HİPOFARENKS KANSER. PREOPERATİF KORD VEARİTENOİD MOBİLİTESİNİN POSTOPERATİF HİSTOPATOLOJİK TETKİK.DEĞER.
Cricoarytenoid | definition of cricoarytenoid by Medical dictionary
Contractile properties and myosin heavy chain isoform composition in single fibre of human laryngeal muscles.
Laryngeal synkinesis following reinnervation in the rat. Neuroanatomic and physiologic study using retrograde fluorescent...
PET/CT
Laryngeal Adductor Spasmodic Dysphonia Causes & Reasons - Symptoma
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Spasmodic Dysphonia
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Ixodes holocyclus
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 the ... Heart muscle. This results in congestive heart failure and pulmonary oedema, seen also as labored breathing. Spring is the peak ... Respiratory muscles. Initially this results in rapid, shallow breathing with an inability to cough. In advanced stages it is ...
Mohamed Nasser Kotby
"Attempts at Evaluation of the Function of various Laryngeal Muscles in the Light of Muscle and Nerve Stimulation Experiments in ... He did his PhD thesis on electromyography of laryngeal muscles in 1967 in Egypt. Later he moved to Norway, where he did a ... Kotby's research interest was focused on understanding the function of the small internal laryngeal muscles and the ... Kotby, M. N. (March 1969). "Electromyography of the laryngeal muscles". Electroencephalography and Clinical Neurophysiology. 26 ...
Cricothyroid ligament
Each is overlapped on either side by laryngeal muscles. The conus elasticus (which means elastic cone in Latin) is the lateral ... Cricothyroid ligament Cricothyroid ligament Cricothyroid ligament Cricothyroid ligament Muscles, nerves and arteries of neck. ...
Neuroregeneration
Flint PW, Shiotani A, O'Malley BW (March 1999). "IGF-1 gene transfer into denervated rat laryngeal muscle". Archives of ... A muscle protein promotes nerve healing Promotion of Functional Nerve Regeneration by Inhibition of Microtubule Detyrosination ... In addition, associated injuries, like injury to bone, muscle and skin, can make nerve recovery more difficult. The level of ... PTEN Muscle LIM protein Microtubule detyrosination Myelinogenesis Neuroprotection Spinal cord injury research Kandel ER, ...
Thyroepiglottic muscle
... and are sometimes described as a separate muscle. This muscle's function is to widen the laryngeal inlet. This article ... Muscles of the head and neck, All stub articles, Muscle stubs). ... considerable number of the fibers of the thyroarytenoid muscle ... They have received a distinctive name, thyroepiglotticus or thyroepiglottic muscle, ...
Duchenne muscular dystrophy
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 ...
Frog hearing and communication
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 ...
Speech and language impairment
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. ...
Morvan's syndrome
Breathing difficulties can occur, resulting from neuromyotonic activity of the laryngeal muscles. Laryngeal spasm possibly ... In one of the few reported cases, the subject presented with muscle weakness and fatigue, muscle twitching, excessive sweating ... In vivo electrophysiological studies suggest at least some dysfunction of the muscle cell membrane. In the examined muscles, no ... In 1890, Morvan described a patient with myokymia (muscle twitching) associated with muscle pain, excessive sweating, and ...
Muscle tension dysphonia
Because of the increased muscle tension of the paralaryngeal and laryngeal muscles, the larynx will be elevated on palpation. ... "The Assessment Methods of Laryngeal Muscle Activity in Muscle Tension Dysphonia: A Review". The Scientific World Journal. 2013 ... The goal of voice therapy is to encourage proper vocal used and decrease the tension of the laryngeal muscles. Examples of ... It is caused by increased tension of the laryngeal muscles secondary to personality traits such as anxiety or life factors such ...
Vocal cord paresis
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 ...
Epiglottis
... 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; ...
Thyroid cancer
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 ...
Darcy Kelley
Tobias, M. L.; Marin, M. L.; Kelley, D. B. (1993). "The roles of sex, innervation and androgen in laryngeal muscle fibers of ... The roles of sex, innervation and androgen in laryngeal muscle fibers of Xenopus laevis, J. Neurosci. 13, 324 - 331. Fischer, L ... 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 ...
Superior laryngeal nerve
The superior laryngeal nerve innervates the two cricothyroid muscles. The recurrent laryngeal nerve gets its name from the fact ... The superior laryngeal nerve innervates the two cricothyroid muscles. A superior laryngeal nerve palsy changes the pitch of the ... the superior laryngeal nerve takes a more direct route on the way to the cricothyroid muscles. The superior laryngeal nerve ... the external laryngeal nerve and the internal laryngeal nerve. The external laryngeal nerve is the smaller, external branch. It ...
Speech science
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 ...
Central pattern generator
... 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 ...
National Center for Voice and Speech
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 ...
Puberphonia
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 ...
Cough reflex
... muscles innervated by recurrent laryngeal nerve) and the vocal cords contract to shut the larynx. The abdominal muscles ... When triggered, impulses travel via the internal laryngeal nerve, a branch of the superior laryngeal nerve which stems from the ... The reflex is impaired in the person whose abdominals and respiratory muscles are weak. This problem can be caused by disease ... The mechanism of a cough is as follows: Diaphragm (innervated by phrenic nerve) and external intercostal muscles (innervated by ...
Arytenoid adduction
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 ...
Bogart-Bacall syndrome
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 ...
Extended vocal technique
By overstressing or by asymmetrically contracting the laryngeal muscles, a multiphonic or chord may be produced.[citation ...
Li Guangxi
In 1983, he was diagnosed with a laryngeal muscle disorder and did not return to the stage until 1986. In 2015 and 2019, he ...
Auditory arrhythmia
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 ...
Phonetics
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 ...
Hoarse voice
Surgeries involve myoectomies of the laryngeal muscles to reduce voice breaks, and laryngoplasties, in which laryngeal ... The most common laryngeal diagnoses among the elderly are polyps, laryngopharyngeal reflux, muscle tension dysphonia, vocal ... Laryngeal stroboscopy is the primary clinical tool used for this purpose. Laryngeal stroboscopy uses a synchronized flashing ... which has been used to reduce tension and massage hyoid-laryngeal muscles. This area is often tense from chronic elevation of ...
Muscle architecture
Strap muscles, such as the laryngeal muscles, have been thought to control the fundamental frequency used in speech production ... The parallel muscle architecture is found in muscles where the fibers are parallel to the force-generating axis. These muscles ... Muscles with short fibers will have higher PCSA per unit muscle mass, thus greater force production, while muscle with long ... Pennate muscles can be further divided into uni-, bi- or multipennate. Unipennate muscles are those where the muscle fibers are ...
African clawed frog
... by contracting the intrinsic laryngeal muscles. Females also answer vocally, signaling either acceptance (a rapping sound) or ...
Voice therapy
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 ...
Distinctive feature
Laryngeal features: The features that specify the glottal states of sounds. [+/− voice] This feature indicates whether ... segments bunch the root of the tongue towards the pharyngeal wall and activate the pharyngeal constrictor muscles [ GLOTTAL ][ ... Vowels, glides and laryngeal segments are not consonantal. [+/− approximant] Approximant segments include vowels, glides, and ... laryngeal features, manner features, and place features. These feature categories in turn are further specified on the basis of ...
Origin of speech
The muscles of the face and lips consequently became less constrained, enabling their co-option to serve purposes of facial ... However, laryngeal descent in nonhumans (according to Philip Lieberman) is not accompanied by descent of the hyoid; hence the ... The muscles concerned are markedly more innervated in humans than in nonhuman primates. Evidence from fossil hominins suggests ... Human tongues are a lot shorter and thinner than other mammals and are composed of a large number of muscles, which helps shape ...
Ventral slot
Attention is paid on any deep nerve structures as the recurrent laryngeal nerve. The goal is to expose the affected disc and ... Based on actual data dogs receiving physiotherapy which serves the strengthening of the muscles and stimulating the spinal cord ...
Low-grade myofibroblastic sarcoma
... also known α-smooth muscle actin) and desmin (i.e. an intermediate filament protein found in all muscle forms including smooth ... difficulty in swallowing and breathing due to a laryngeal LGMS tumor, and abdominal pain due to a pancreas LGMS tumor. A study ... Eighty-two percent of their LGMS tumors were located in soft tissues (28.2% in mucous membranes, 21.8% in muscle, 19.2% in skin ... The tumors are not encapsulated and commonly infiltrate adjacent fibrous, fat, or skeletal muscle tissues. (The tumor's spindle ...
Shortness of breath
Other respiratory muscles include the external and internal intercostal muscles, the abdominal muscles and the accessory ... Acute shortness of breath is usually connected with sudden physiological changes, such as laryngeal edema, bronchospasm, ... Muscle spindles in the chest wall signal the stretch and tension of the respiratory muscles. Thus, poor ventilation leading to ... Efferent signals are the motor neuronal signals descending to the respiratory muscles. The most important respiratory muscle is ...
Spasmodic dysphonia
... , 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 ...
Vocal loading
These include all kinds of muscular strain in the speech organs, similarly as usage of any other muscles will experience strain ... voice quality - Using a vocal quality which differs from that habitually used is thought to increase laryngeal stress. In ... Using a higher or lower pitch than normal will also increase laryngeal stress. ...
H19 (gene)
suggest that the accumulation of H19 RNA in skeletal muscle cells is solely due to the stabilization of that RNA in the muscle ... H19 is overexpressed in laryngeal squamous cell carcinomas that relapse as compared to those that do not relapse. In a pilot ... H19 was first named ASM (for Adult Skeletal Muscle) because of its expression in adult skeletal muscle ("ASM") in rats. H19 is ... Immediately after birth, H19 expression is downregulated in all tissues except for skeletal muscle. Studies by Tanos et al. ...
Vocal cord cyst
Imaging is most commonly done with laryngeal videostroboscopy. A videostroboscopy is an examination of the vocal folds using ... and the Thyroarytenoid Muscle. Vocal fold cysts commonly appear in the Superficial portion of the Lamina Propria, the cyst size ... Vocal fold cysts are diagnosed based on gathering a case history, perceptual examination, and laryngeal imaging. Practicing ...
Freeman-Sheldon syndrome
Cruickshanks GF, Brown S, Chitayat D (1999). "Anesthesia for Freeman-Sheldon syndrome using a laryngeal mask airway". Can J ... Online Mendelian Inheritance in Man (OMIM): MYOSIN, HEAVY CHAIN 3, SKELETAL MUSCLE, EMBRYONIC; MYH3 - 160720 b .0001 c .0002 d ... with avoidance of radical measures and careful consideration of the abnormal muscle physiology in Freeman-Sheldon syndrome. ... Due to the abnormal muscle physiology in Freeman-Sheldon syndrome, therapeutic measures may have unfavourable outcomes. ...
List of skin conditions
Within these components are the pilosebaceous units, arrector pili muscles, and the eccrine and apocrine glands. The dermis ... laryngeal papillomatosis) Rift Valley fever Roseola infantum (exanthem subitum, exanthema subitum, sixth disease) Roseola ... and related muscle and glands. The major function of this system is as a barrier against the external environment. The skin ... and a deeper vestigial layer of muscle, the panniculus carnosus. The main cellular component of this tissue is the adipocyte, ...
Giraffe
... s have oesophageal muscles that are strong enough to allow regurgitation of food from the stomach up the neck and into ... In mammals, the left recurrent laryngeal nerve is longer than the right; in the giraffe, it is over 30 cm (12 in) longer. These ... The giraffe's head and neck are held up by large muscles and a nuchal ligament, which are anchored by long thoracic vertebrae ... Wedel, M. J. (2012). "A monument of inefficiency: the presumed course of the recurrent laryngeal nerve in sauropod dinosaurs" ( ...
Thyrohyoid membrane
... sternohyoid muscle, and omohyoid muscles, and with the body of the hyoid bone. It is pierced by the superior laryngeal nerve. ... Its lateral thinner portions are pierced by the superior laryngeal vessels and the internal branch of the superior laryngeal ... Bruyn, G. W. (1983-12-01). "Superior Laryngeal Neuralgia". Cephalalgia. 3 (4): 235-240. doi:10.1046/j.1468-2982.1983.0304235.x ... Thyrohyoid membrane Thyrohyoid membrane Thyrohyoid membrane Muscles, nerves and arteries of neck. Deep dissection. Anterior ...
History of neurology and neurosurgery
One particular discovery he made was of the importance of the recurrent laryngeal nerves. Originally, he cut through them ... Luigi Galvani (1737-1798) demonstrated that electrical stimulation of nerve produced muscle contraction, and the competing work ... in the muscles of the larynx on both left and right, which if ligated or cut render the animal speechless without damaging ...
Deaths in September 2019
Ji Guobiao, 87, Chinese chemical engineer, member of the Chinese Academy of Engineering, laryngeal cancer. Alberto Jara Franzoy ... 90, Chilean Roman Catholic prelate, Bishop of Chillán (1982-2006). Jimmy Johnson, 76, American musician (Muscle Shoals Rhythm ...
Vocal pedagogy
It refers to a dynamic relationship between the breathing-in muscles and the breathing-out muscles known as the breath support ... Registers originate in laryngeal function. They occur because the vocal folds are capable of producing several different ... Singing does not require much muscle strength but it does require a high degree of muscle coordination. Individuals can develop ... If a singer holds any of these factors constant and interferes with their progressive state of change, his laryngeal function ...
Cat
The laryngeal muscles in control of the glottis are thought to be driven by a neural oscillator which generates a cycle of ... While asleep, cats experience short periods of rapid eye movement sleep often accompanied by muscle twitches, which suggests ...
Cerebral palsy
Although most people with CP have problems with increased muscle tone, some have normal or low muscle tone. High muscle tone ... Speech problems are associated with poor respiratory control, laryngeal and velopharyngeal dysfunction, and oral articulation ... Signs and symptoms vary among people and over time, but include poor coordination, stiff muscles, weak muscles, and tremors. ... Phelps developed surgical techniques for operating on the muscles to address issues such as spasticity and muscle rigidity. ...
Bag valve mask
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" ...
Thoracic aorta injury
If both the inner layer and the muscle layer of the aortic wall are both involved in the injury then the injury is categorized ... and hoarseness due to involvement of the recurrent laryngeal nerve. There might be external signs such as bruising on the ... If just the inner layer and a portion of the muscle layer are involved in the injury then the injury is characterized as ... the muscle layer (media), and the outer layer (adventitia). A traumatic injury to the thoracic aorta can cause disruption of ...
Swallowing
The bolus enters the esophagus and is propelled downwards first by striated muscle (recurrent laryngeal, X) then by the smooth ... Swallowing is a complex mechanism using both skeletal muscle (tongue) and smooth muscles of the pharynx and esophagus. The ... The intrinsic muscles of the tongue (XII) contract to make a trough (a longitudinal concave fold) at the back of the tongue. ... Next, the superior longitudinal muscle elevates the apex of the tongue to make contact with the hard palate and the bolus is ...
Articulatory phonetics
... hyoid bone sternothyroid muscle (lowers thyroid) sternohyoid muscle (lowers hyoid) stylohyoid muscle (raises hyoid) digastric ... the laryngeal piston) is raised decreasing the oral cavity volume behind the valve closure and increasing the pressure compared ... lateral cricoarytenoid muscle (fold shortening/stiffening) thyroarytenoid muscle (medial compression/fold stiffening, internal ... cricoid cartilage thyroid cartilage arytenoid cartilage interarytenoid muscles (fold adduction) posterior cricoarytenoid muscle ...
Index of anatomy articles
... muscle rectus capitis anterior muscle rectus capitis lateralis muscle rectus femoris muscle rectus sheath recurrent laryngeal ... motor unit mouth mucoperiosteum mucosa mucous membranes multifidus muscle muscle fascicle muscle spindle muscle tissue muscles ... levator muscle levator labii superioris muscle levator palpebrae muscle levator palpebrae superioris levator scapulae muscle ... sternocleidomastoid muscle sternohyoid muscle sternothyroid muscle sternum stoma stomach straight sinus strap muscles Stratum ...
Glossary of communication disorders
Dystonia Abnormal muscle tone of one or more muscles. Ear infection Presence and growth of bacteria or viruses in the ear. ... Laryngeal neoplasms Abnormal growths in the larynx (voice box) that can be cancerous or noncancerous. Laryngeal nodules ... Developmental verbal dyspraxia In individuals with normal muscle tone and speech muscle coordination, partial loss of the ... because of muscle weakness or incoordination or difficulty performing voluntary muscle movements. Neuroplasticity Ability of ...
Microbat
Laryngeal echolocation is the dominant form of echolocation in microbats, however, it is not the only way in which microbats ... The larynx is located at the cranial end of the trachea and is surrounded by cricothyroid muscles and thyroid cartilage. For ... "Evolutionary origins of ultrasonic hearing and laryngeal echolocation in bats inferred from morphological analyses of the inner ... the importance of this connection is that it supports the larynx by anchoring it to the surrounding cricothryroid muscles, as ...
Subclavian artery
... and the sternocleidomastoid muscle. Behind, it is in relation with the esophagus, thoracic duct, left recurrent laryngeal nerve ... the clavicular origin of the sternocleidomastoid muscle, the sternohyoid muscle, and the sternothyroid muscle, and another ... The second portion of the subclavian artery lies behind the scalenus anterior muscle and in front of the scalenus medius muscle ... It is covered by the sternothyroid muscle, the sternohyoid muscle, ...
List of MeSH codes (C04)
... muscle tissue MeSH C04.557.450.590.350 - granular cell tumor MeSH C04.557.450.590.450 - leiomyoma MeSH C04.557.450.590.450.125 ... laryngeal neoplasms MeSH C04.588.443.665.650 - nose neoplasms MeSH C04.588.443.665.650.693 - paranasal sinus neoplasms MeSH ... smooth muscle tumor MeSH C04.557.450.795 - sarcoma MeSH C04.557.450.795.135 - adenosarcoma MeSH C04.557.450.795.290 - ... muscle neoplasms MeSH C04.588.839.750 - vascular neoplasms MeSH C04.588.894.309 - heart neoplasms MeSH C04.588.894.479 - ...
A Method to Measure Elicited Contraction of Laryngeal Adductor Muscles during Anesthesia | Anesthesiology | American Society of...
A Method to Measure Elicited Contraction of Laryngeal Adductor Muscles during Anesthesia François Donati, Ph.D., M.D., F.R.C.P. ... ORG 9487 Neuromuscular Block at the Adductor Pollicis and the Laryngeal Adductor Muscles in Humans Anesthesiology (June 1997) ... François Donati, Benoît Plaud, Claude Meistelman; A Method to Measure Elicited Contraction of Laryngeal Adductor Muscles during ... Rapid Plasma-Effect Site Equilibration Explains Faster Onset at Resistant Laryngeal Muscles than at the Adductor Pollicis ...
Laryngeal Manual Therapy: A Preliminary Study to Examine its Treatment Effects in the Management of Muscle Tension Dysphonia -...
Laryngeal Manual Therapy: A Preliminary Study to Examine its Treatment Effects in the Management of Muscle Tension Dysphonia. * ... Laryngeal Manual Therapy: A Preliminary Study to Examine its Treatment Effects in the Management of Muscle Tension Dysphonia ... Muscle tension dysphonia and spasmodic dysphonia: the role of manual laryngeal tension reduction in diagnosis and management. ... for the evaluation of a method of laryngeal manual therapy (LMT) used in the treatment of patients with muscle tension ...
Expression of myosin heavy chain isoforms in laryngeal muscles in comparison with skeletal and special muscles
Immunohistochemical analysis of laryngeal muscles in normal horses and horses with subclinical recurrent laryngeal neuropathy. ... Expression of myosin heavy chain isoforms in laryngeal muscles in comparison with skeletal and special muscles. MACCATROZZO, ... Immunohistochemical analysis of laryngeal muscles in normal horses and horses with subclinical recurrent laryngeal neuropathy. ... A new concept in laryngeal muscle: multiple myosin isoform types in single muscle fibers of the lateral cricoarytenoid. ...
Visible Body - Virtual Anatomy to See Inside the Human Body
Myasthenia Gravis Clinical Presentation: History, Physical Examination
... which antibodies form against acetylcholine nicotinic postsynaptic receptors at the neuromuscular junction of skeletal muscles ... Weakness of the laryngeal muscles results in hoarseness. This can be elicited by asking the patient to make a high-pitched (" ... Certain limb muscles are involved more commonly than others (eg, upper limb muscles are more likely to be involved than lower ... They may have facial and tongue muscle atrophy and may mimic ALS. [31] Some patients have early respiratory muscle and neck ...
Myasthenia Gravis Clinical Presentation: History, Physical Examination
... which antibodies form against acetylcholine nicotinic postsynaptic receptors at the neuromuscular junction of skeletal muscles ... Weakness of the laryngeal muscles results in hoarseness. This can be elicited by asking the patient to make a high-pitched (" ... Certain limb muscles are involved more commonly than others (eg, upper limb muscles are more likely to be involved than lower ... They may have facial and tongue muscle atrophy and may mimic ALS. [31] Some patients have early respiratory muscle and neck ...
DeCS 2017 - December 21, 2017 version
Laryngeal Muscle use Laryngeal Muscles Laryngeal Muscles Laryngeal Neoplasm use Laryngeal Neoplasms ... Laryngeal Cancer use Laryngeal Neoplasms Laryngeal Cancers use Laryngeal Neoplasms Laryngeal Cartilage use Laryngeal Cartilages ... Laryngeal Epithelium use Laryngeal Mucosa Laryngeal Granuloma use Granuloma, Laryngeal Laryngeal Granulomas use Granuloma, ... Laryngeal Nerve Contusions use Laryngeal Nerve Injuries Laryngeal Nerve Injuries Laryngeal Nerve Injury use Laryngeal Nerve ...
Some Comparative Anatomical Studies on the Laryngeal Muscles and Cavity of Buffaloes, Camels and Donkeys
| Journal of...
In the three species, the laryngeal muscles were similar to those of other domestic animals, but the hyoepiglotticus muscle of ... Some Comparative Anatomical Studies on the Laryngeal Muscles and Cavity of Buffaloes, Camels and Donkeys Authors. * Mohamed A. ... The aim of this study was to compare between the laryngeal muscles and cavity in buffaloes, camels and donkeys. A total of 30 ... The laryngeal cavity of donkey was characterized by the presence of lateral laryngeal saccule that located between the two ...
Spastic Dysphonia
Uncontrolled intrinsic laryngeal Muscle Contraction. *Neurogenic causes in most cases. *Psychogenic in some cases surrounding ... Otolaryngology - Laryngeal Disease Pages Acute Laryngitis Chronic Laryngitis Dysphonia Plicae Ventricularis Functional Aphonia ... Laryngeal Fracture Reflux Laryngitis Smokers Laryngitis Spastic Dysphonia Vocal Cord Dysfunction Vocal Cord Paralysis Vocal ... Laryngeal Disease Chapter Lip Disorders Chapter Mental Health Chapter Nasal Disease Chapter Neonatology Chapter Neurology ...
Internet Scientific Publications
Use of the intubating laryngeal mask airway: Are muscle relaxants necessary? Anesthesiology. 2000;93:345-350. 37. Davies PRF, ... Muscle Relaxants. Use of muscle relaxation in patients to be intubated has shown to decrease the number of complications when ... is the only depolarizing muscle relaxant in clinical use. At an induction dose of 1-1.5 mg/kg, it is used as the muscle ... Knowledge of the innervation of the larynx, particularly the left recurrent laryngeal nerve (RLN) and the superior laryngeal ...
Medications used in Tracheal Intubation: Medications for Rapid Sequence Endotracheal Intubation, Stage 1 - Pretreatment,...
After it is administered, the NMB of the diaphragm is slower than laryngeal muscles and slowest at the adductor pollicis muscle ... Propofol depresses pharyngeal and laryngeal muscle tone and reflexes more than the other induction agents mentioned. ... Paralysis proceeds from the small, distal, rapidly moving muscles to the proximal, slowly moving muscles. The diaphragm is one ... the ocular pupillary sphincter muscle itself is composed of smooth muscle, and its neuromuscular endplate is populated by ...
iro-2009-monthly-usage.xlsx - Google Sheets
Bibliography
A retrospective cohort study of racing performance in Quarter Horses undergoing prosthetic laryngoplasty for treatment of...
... and career longevity in racing Quarter Horses with recurrent laryngeal neuropathy (RLN) and to evaluate performance variables ... Treatment of left laryngeal hemiplegia in Standardbreds, using a nerve muscle pedicle graft. Am J Vet Res 1991;52:1461-1467. ... Treatment of left laryngeal hemiplegia in Standardbreds, using a nerve muscle pedicle graft. . Am J Vet Res. 1991. ;. 52. :. ... Racing performance in 72 racehorses treated with prosthetic laryngoplasty for laryngeal hemiplegia. J Equine Vet Sci 2009;29: ...
Vocal Cord Dysfunction: An Often-Misdiagnosed Condition
The lateral cricoarytenoid and posterior cricoarytenoid muscles and the vagus, recurrent laryngeal, and superior laryngeal ... Knowledge of normal laryngeal anatomy and physiology will help the pharmacist understand the etiology of VCD (Figure 1).[6] ... and lateral cricoarytenoid muscles causes adduction of the vocal cords.[14] The respiratory movements of the vocal cords are ... coordinated with those of the diaphragm and other muscles of the ventilator pump.[15] A complex innervation of muscles and ...
Meet Liz Caplan, the Vocal Coach Behind the Tony Award-Winning Stars of Hedwig, Aladdin and Les Miz | Playbill
This is to ensure the singer does not succumb to using compensatory muscles (which create excess laryngeal pressure) in lieu of ... Whats going on with your muscles? Any strain in your head or neck from working out?. How has your digestion been?. Are you ... You realize quickly how the muscles are smarter than you, and are not so willing to perform on command. So ongoing vocal work ... I would teach significantly different exercises for rock and pop shows to help the vocal muscles meet the demands than I would ...
Signs of Covid-19 may be hidden in speech signals | MIT News | Massachusetts Institute of Technology
These biomarkers stem from disruptions the infection causes in the movement of muscles across the respiratory, laryngeal, and ... They hypothesized that Covid-19 inflammation causes muscles across these systems to become overly coupled, resulting in a less ... This air interacts with hundreds of other potentially inflamed muscles on its journey to speech production. These interactions ...
Find Research outputs - Manipal Academy of Higher Education, Manipal, India
Anomalous unilateral intrinsic laryngeal muscle: A case report. Pai, S. R. & Marx, C. S., 01-03-2007, In: Indian Journal of ... Anomalous muscle from the fascia around popliteal vessels.. Rodrigues, V., Nayak, B. S., Rao, M. K. G., Rao, A. S., ... Anomalous muscle belly to the index finger. DCosta, S., Jiji, Nayak, S. R., Sivanadan, R. & Abhishek, 04-09-2006, In: Annals ... Anomalous origin of the lumbrical muscles: A study on South Indian cadavers. Potu, B. K., Gorantla, V. R., Rao, M. S., Bhat, K ...
Zenker's Diverticulectomy - Case Examples (CO2 Laser) | Iowa Head and Neck Protocols
Laryngeal spreaders were used to expose the underlying cricopharyngeus muscle. With dissection of mucosa from the muscle, the ... Laimers: located inferior and posterior to the cricopharyngeus muscle; inverted triangle of circular esophageal muscle in area ... inferior to the transverse portion of the cricopharyngeus muscle and lateral to the longitudinal muscle of the esophagus (LEM ... Zenkers: most common form, originates posteriorly below the inferior constrictor and above the cricopharyngeus muscle. They ...
Probable Rabies Virus Transmission through Organ Transplantation, China, 2015 - Volume 22, Number 8-August 2016 - Emerging...
The respiratory control mechanisms in the brainstem and spinal cord: integrative views of the neuroanatomy and neurophysiology ...
... to primarily gate the respiratory motor activity of the cranial nerves innervating the laryngeal adductor and tongue muscles ... Greer JJ, Martin TP (1990) Distribution of muscle fiber types and EMG activity in cat intercostal muscles. J Appl Physiol (1985 ... and muscles in the rostral interspaces show stronger activities than muscles in the caudal interspaces in anesthetized dogs and ... In the hindlimb muscle, although the soma size of the slow-twitch oxidative motor unit tended to be smaller than that of the ...
Anne-Maria Laukkanen | Tampereen korkeakouluyhteisö
Laukkanen A-M, Titze IR, Finnegan EM, Hoffman H. Laryngeal muscle activity in a tonal scale: Comparing speech-like to song-like ... Titze IR, Finnegan EM, Laukkanen A-M, Fuja M, Hoffman H. Laryngeal muscle activity in giggle: A damped oscillation model. The ... Effects of a semi-occluded vocal tract on laryngeal muscle activity and glottal adduction in a single female subject. Folia ... Titze IR, Finnegan EM, Laukkanen A-M, Fuja M, Hoffman H. Laryngeal muscle activity in giggle: A damped oscillation model. ...
Telehealth Studies - Purdue I-Eat Research Lab
Find Research outputs - Manipal Academy of Higher Education, Manipal, India
Botulinum toxin injection - larynx: MedlinePlus Medical Encyclopedia
When injected, BTX blocks nerve signals to muscles so they relax. ... This weakens the muscles and improves voice quality. It is not ... You would have this procedure if you have been diagnosed with laryngeal dystonia. BTX injections are the most common treatment ... When injected, BTX blocks nerve signals to muscles so they relax.. BTX is the toxin that causes botulism, a rare but serious ... An EMG machine records the movement of your vocal cord muscles through tiny electrodes placed on your skin. This helps your ...
Pet [email protected] Beach Street | SPCA Penang
SciELO - Revista Brasileira de Otorrinolaringologia, Volume: 69, Issue: 1, Published: 2003
... we conducted an analysis in order to understand the role of intrinsic laryngeal muscles. ... Laryngeal and pharyngeal tumors exhibit a high incidence in Brazil, occupying the sixth position as the most frequent cancer ... Based on a case of selective paralysis of lateral cricoarytenoid muscle in a woman who had paralyzed vocal fold at lateral ... Laryngomalacia is the most common cause of stridor and the most common congenital laryngeal anomaly in infants. Usually, it ...
PDF) Diagrama de Desvio Fonatório em dois programas de reabilitação vocal
... because the function and performance of laryngeal skeletal muscle can be different from those of skeletal muscles used for ... A brief review of basic principles of muscle training as understood for skeletal muscle will be followed by a more extensive ... To date, the use of the basic principles of muscle training for designing a voice rehabilitation program or advising voice ... The basic principles of exercise training for skeletal muscle adaptations have been applied to voice training for some time. ...
Linguistics Exam 1 Speech Disorders | Linguistics Homework Help
laryngeal cancer symptoms. if the cellular changes affect the vocal folds or the muscles that move them, then voice symptoms ... botox injections to weaken the affected muscles. - usually the main muscle in the center of the vocal folds, bc most cases are ... removal of the entire larynx and extra laryngeal muscles with major reconstruction that achieves functional ... laryngeal can be painless and soundfine. - your voice after a football game canbe painful and almost aphonic - the client might ...
Laryngeal Paralysis in Dogs
Laryngeal paralysis can make it difficult for a dog to swallow and even breathe. Learn the causes, treatment, and prevention. ... In the case of laryngeal paralysis, the muscles that move the larynx become paralyzed, making it impossible for the larynx to ... What Is Laryngeal Paralysis? Laryngeal paralysis is a condition that affects the larynx in a dogs throat. The larynx is a ... How to Prevent Laryngeal Paralysis There is no guaranteed way to prevent laryngeal paralysis, but you can reduce the chances by ...
LarynxRecurrent laryngeal neuropathyParalysisAirwayDystoniaIntrinsicContractionCavitySpasmInnervationPosterior cricoarytenoidEsophagusSpasmodic DysphoniaAdductorWeaknessCricoid cartilageLungsNerveProminencePhonationNeurologicalVocal foldsCricothyroidNervesStridorPulmonaryOrbicularis oris mInjectionsAnatomyMucosalNasalPharynxDog'sDiseasesNeck musclesSymptomsCartilagesLateral cricoarytenoidEpiglottisInsertionPatientsRespirationDiagnosisMucous membraneDiaphragmThyroarytenoidMajor musclesIncludeHyoid
Larynx16
- Larynx in mammals is characterized by five intrinsic laryngeal muscles with complex movements involved in respiration, airway protection and phonation. (unipd.it)
- Knowledge of the innervation of the larynx, particularly the left recurrent laryngeal nerve (RLN) and the superior laryngeal nerve (SLN), is important with regards to airway management. (ispub.com)
- [ 15 ] A complex innervation of muscles and nerves causes the larynx to adduct and abduct the vocal cords. (medscape.com)
- Laryngeal paralysis affects the larynx, which is part of a dog's throat. (thesprucepets.com)
- Laryngeal paralysis is a condition that affects the larynx in a dog's throat. (thesprucepets.com)
- Surrounding muscles normally work to pull the larynx open, allowing air into the lungs while breathing. (thesprucepets.com)
- In the case of laryngeal paralysis, the muscles that move the larynx become paralyzed, making it impossible for the larynx to fully open or close the trachea. (thesprucepets.com)
- Additionally, when a dog with laryngeal paralysis is eating, it may gag or cough due to the larynx allowing food or water to enter the trachea. (thesprucepets.com)
- Less severe cases may only need anti-inflammatory medications to reduce laryngeal swelling, weight loss to relieve pressure on the larynx, and restriction from exciting activities. (thesprucepets.com)
- As we age, the folds of muscle that surround the larynx weaken, causing the voice to sound hoarse and breathy. (undergroundhealthreporter.com)
- Laryngeal cancer is a disease in which malignant (cancer) cells form in the tissues of the larynx. (emedicinehealth.com)
- Laryngeal Cancer and Papillomatosis in Children In laryngeal cancer , malignant ( cancer ) cells form in the tissues of the larynx. (emedicinehealth.com)
- Various injuries to the nerve supply of the larynx weaken some of the muscles and in this case the nerve injury involves the anterior branch of the recurrent laryngeal nerve. (voicedoctor.net)
- We also show that koalas can retract the larynx down into the thoracic inlet, facilitated by a dramatic evolutionary transformation of the ventral neck muscles. (sussex.ac.uk)
- Finally, the digastric, omohyoid and sternohyoid muscles, connected by a common tendinous intersection, form a guiding channel for the dynamic down-and-up movements of the ventral hyoid parts and the larynx. (sussex.ac.uk)
- Muscles, nerves, and blood vessels surround the larynx. (drjustinelee.com)
Recurrent laryngeal neuropathy1
- Immunohistochemical analysis of laryngeal muscles in normal horses and horses with subclinical recurrent laryngeal neuropathy. (unipd.it)
Paralysis10
- What Is Laryngeal Paralysis? (thesprucepets.com)
- The most obvious symptoms of laryngeal paralysis are audible ones that might initially sound like the dog has something caught in its throat. (thesprucepets.com)
- Dogs that have developed laryngeal paralysis may sound noisy when they are breathing and panting. (thesprucepets.com)
- Because it is more difficult for a dog with laryngeal paralysis to breathe, it may tire more easily and even collapse in more advanced stages of the disease. (thesprucepets.com)
- Labrador retrievers , golden retrievers , St. Bernards , Newfoundlands , and English setters seem to be the most commonly affected breeds, but laryngeal paralysis can also occur in any dog. (thesprucepets.com)
- Research indicates that there may also be a few underlying medical conditions that can increase the likelihood of developing laryngeal paralysis. (thesprucepets.com)
- A veterinarian will listen to and watch the symptoms that the dog is exhibiting to make a diagnosis of laryngeal paralysis. (thesprucepets.com)
- Surgical correction is the only treatment option for dogs with severe cases of laryngeal paralysis. (thesprucepets.com)
- If laryngeal paralysis is a problem that is related to hypothyroidism or degenerative polyneuropathy, then other treatment options will be recommended by your veterinarian to address the specific underlying condition. (thesprucepets.com)
- Other more common genetic disorders in sled dogs up here has been laryngeal paralysis (as Chanel has), severe over bites or under bites and thyroid problems. (carolkleckner.net)
Airway3
- Bilateral injury to the RLN can cause adduction of both the vocal cords leading to complete airway obstruction.3,4 The external branch of the superior laryngeal nerve supplies the cricothyroid muscle after transversing the thyrohyoid membrane. (ispub.com)
- It was also demonstrated that a second type of airflow interruption was initiated by alterations in respiratory muscle activity without any changes in specific airway resistance. (cdc.gov)
- However, a swallow study noted food entering the airway (deep laryngeal penetration), requiring honey-thickened liquids to prevent aspiration. (harvard.edu)
Dystonia4
- It is not a cure for laryngeal dystonia, but can help ease the symptoms. (medlineplus.gov)
- You would have this procedure if you have been diagnosed with laryngeal dystonia . (medlineplus.gov)
- Comparison of clinical characteristics of patients with adductor laryngeal dystonia in the focal and segmental types. (medscape.com)
- Spasmodic dysphonia , also called laryngeal dystonia, is a neurological disorder, responsible of a strangulated, strained voice and rarely of a whispering voice, which has a major negative influence at work and in personal life. (infodystonia.com)
Intrinsic1
- The weaker vocal cord still receives tension from the uninjured cricothyroid muscle but lacks intrinsic tension. (voicedoctor.net)
Contraction1
- Smooth muscle contraction may lead to laryngeal stridor, dysphagia, and bronchospasm. (medscape.com)
Cavity3
- The aim of this study was to compare between the laryngeal muscles and cavity in buffaloes, camels and donkeys. (advetresearch.com)
- The ventricular folds (O.T. false vocal cords) are two prominent folds of mucous membrane which extend ventro-dorsally on the lateral walls of the laryngeal cavity. (co.ma)
- The branchiomeric muscles of vertebrates comprise the pharyngeal and laryngeal muscles while the orobranchial muscles of chordates comprise the gill and mouth muscles/cavity. (vedantu.com)
Spasm1
- Succinylcholine Induced Masseter Muscle Spasm during Rapid Sequence Induction in a Pregnant Patient with Kypho- Scoliosis: Case Report. (aimdrjournal.com)
Innervation1
- The thyroarytenoid muscle and the lateral cricoarytenoid muscle on the left side have only partial innervation. (voicedoctor.net)
Posterior cricoarytenoid2
- [ 14-16 ] The lateral cricoarytenoid and posterior cricoarytenoid muscles and the vagus, recurrent laryngeal, and superior laryngeal nerves are involved in this process. (medscape.com)
- The lateral or the posterior cricoarytenoid - laryngeal muscles. (tipilandia.es)
Esophagus2
- resides anterolateral to the esophagus - inferior to the transverse portion of the cricopharyngeus muscle and lateral to the longitudinal muscle of the esophagus (LEM), where the LEM inserts into the inferior border of the cricoid cartilage. (uiowa.edu)
- The cancers that affect brain, esophagus, thyroid gland, head muscles, skin cancers are not considered as head and neck cancers. (safemedtrip.com)
Spasmodic Dysphonia2
- Patients with spasmodic dysphonia require to be distinguishing from patients with functional dysphonia and from patients with "muscle tension dysphonia" (MTD) which is also considered a functional disorder rather than a neurological disorder. (infodystonia.com)
- 7- "Muscle tension dysphonia" (MDT) patients tend to exert too much effort on their vocal cords when speaking and can present with a strained voice, as spasmodic dysphonia. (infodystonia.com)
Adductor2
- 2. What are the ADductor muscles as related to the vocal folds and how do they function? (directcurrentmusic.com)
- ADductor muscles pull the vocal folds together for phonation by rotating the arytenoids. (directcurrentmusic.com)
Weakness22
- Patients with myasthenia gravis (MG) present with painless, specific muscle weakness, and not generalized fatigue. (medscape.com)
- Myasthenic weakness typically affects the extraocular, bulbar, or proximal limb muscles. (medscape.com)
- Rarely, patients with severe, generalized weakness may not have associated ocular muscle weakness. (medscape.com)
- Patients with fluctuating fatigable muscle weakness due to MG will describe weakness of a specific group of muscles that is brought on by activity and which improves with rest. (medscape.com)
- Maneuvers that fatigue specific muscle groups can be very useful in provoking weakness in patients. (medscape.com)
- In contrast, patients with generalized fatigue or malaise do not typically display true muscle weakness with provocative maneuvers. (medscape.com)
- Eye findings are common, with ptosis and extraocular muscle weakness occurring in more than 50% of patients at the time of presentation and in more than 90% of patients sometime during their illness. (medscape.com)
- Myasthenic weakness of the ocular muscles have been known to mimic CN III, CN IV, and CN VI nerves palsies and, rarely, an internuclear ophthalmoplegia. (medscape.com)
- Fixed extraocular muscle weakness may occur late in the illness, especially if untreated. (medscape.com)
- [ 33 ] Weakness of palatal muscles may confer a nasal quality to the voice. (medscape.com)
- The reason that when we stand up-right is the best for us is because the muscles are at an optimal position because poor posture causes weakness in your muscles. (directcurrentmusic.com)
- Although the prevalence of muscle weakness in the general population is uncertain, it occurs in about 5% of U.S. adults 60 years and older. (aafp.org)
- Determining the cause of muscle weakness can be challenging. (aafp.org)
- True muscle weakness must first be differentiated from subjective fatigue or pain-related motor impairment with normal motor strength. (aafp.org)
- Muscle weakness should then be graded objectively using a formal tool such as the Medical Research Council Manual Muscle Testing scale. (aafp.org)
- Given its broad differential diagnosis, muscle weakness can be challenging to evaluate in primary care practice. (aafp.org)
- 1 Physicians must distinguish true muscle weakness from subjective fatigue or pain-related motor impairment with normal motor strength. (aafp.org)
- The differential diagnosis of muscle weakness in adults is extensive because it can occur when pathology affects any level of the neuromuscular pathway (upper or lower motor neurons, neuromuscular junction, and muscle fibers). (aafp.org)
- Table 1 lists selected causes of muscle weakness and their clinical findings. (aafp.org)
- The endoscope may be angled beneath the arytenoids to visualize the asymmetric angles of closure between the vocal processes in a unilateral lateral cricoarytenoid muscle weakness, one vocal process remaining lateral while the normal side's vocal process hyperextends past midline trying to reach the weakened vocal cord. (voicedoctor.net)
- There may be muscle weakness, especially in the thighs and upper arms , as well as exaggerated deep tendon reflexes . (osmosis.org)
- RATIONALE: Profound muscle weakness during and after critical illness is termed intensive care unit-acquired weakness (ICUAW). (bvsalud.org)
Cricoid cartilage1
- The Cricothyroid muscles tip the thyroid cartilage towards the cricoid cartilage and lengthen the vocal folds. (directcurrentmusic.com)
Lungs1
- These provide a cage like structure for the lungs and heart that is able to expand and contract due to the cartilage and muscles that connect to it. (directcurrentmusic.com)
Nerve11
- When injected, BTX blocks nerve signals to muscles so they relax. (medlineplus.gov)
- Tumor that is outside the confines of the thyroid gland, and that is invading the soft tissues of the neck, can usually be removed without injury to the neck muscles or recurrent laryngeal nerve needed by the vocal cords. (thyca.org)
- Laryngeal nerve damage, resulting in a change in the voice quality. (thyca.org)
- Let's consider a left, partial recurrent laryngeal nerve injury - a common vocal impairment. (voicedoctor.net)
- However, for the astute examiner, even a mild paresis of the anterior branch of the recurrent laryngeal nerve will also be visible. (voicedoctor.net)
- In the case of a paresis of the anterior branch of the recurrent laryngeal nerve (thyroarytenoid muscle, lateral cricoarytenoid muscle), most of the audible findings of impairment will be present at low pitch and low volume. (voicedoctor.net)
- An intact superior laryngeal nerve allows compensation from the cricothyroid muscle, which pulls the vocal cords closer together at higher pitch yielding clearer sound quality. (voicedoctor.net)
- Nerve: recurrent laryngeal of the vagus CN X. Action: rotates arytenoid cartilages for vocalizations. (tipilandia.es)
- Nerve: superior laryngeal of the vagus CN X. Action: tenses stretches vocal cords. (tipilandia.es)
- Posterolateral structures include the anterior scalene muscle with the phrenic nerve, brachial plexus and its branches, vertebral artery, and longus colli muscles. (medscape.com)
- Therefore, accumulation of glycogen in liver, muscle and nerve cells results in gradual dysfunction of these organs. (labogen.com)
Prominence2
- On the posterior border of the SCM muscle, level with the laryngeal prominence. (rootdown.us)
- Adam's Apple ("V" shaped structure in upper neck) is also known as Laryngeal Prominence. (vjtransgenderclinics.com)
Phonation1
- The recording, using an electrolaryngograph, of the activity of the vocal cords from potentials arising in the laryngeal muscles during phonation and respiration. (wordinfo.info)
Neurological1
- What is less well known is that the progression of this muscle wasting side effect may lead to a diagnosis of amyotrophic lateral sclerosis (ALS), also called Lou Gehrig's disease or motor neurone disease, described as a chronic, progressive, almost invariably fatal neurological disease. (newmediaexplorer.org)
Vocal folds1
- We also confirm that the edges of the intra-pharyngeal ostium have specialised to form the novel, extra-laryngeal velar vocal folds, which are much larger than the true, intra-laryngeal vocal folds in both sexes, but more developed and specialised for low frequency sound production in males than in females. (sussex.ac.uk)
Cricothyroid2
- Whenever the vocal cords cannot approximate tightly from thyroarytenoid muscle lack of tension or from lack of medial rotation by the lateral cricoarytenoid muscle, the cricothyroid muscle tends to tighten, adding compensatory tension to the vocal cords. (voicedoctor.net)
- By listening to a lower pitch, the examiner is removing the compensation provided by the cricothyroid muscle and the weak vocal cord will rest in a more lateral position as well as a more concave configuration, allowing more air leak. (voicedoctor.net)
Nerves2
- [ 14 ] Sensory fibers in the intercostal nerves can affect laryngeal movements, but the responses are complex. (medscape.com)
- All these muscles are innervated by cervical spinal nerves, and most of these muscles act primarily to move and stabilize the head. (tipilandia.es)
Stridor1
- Laryngomalacia is the most common cause of stridor and the most common congenital laryngeal anomaly in infants. (scielo.br)
Pulmonary1
- Transmission is most likely to occur from patients who have unrecognized pulmonary or laryngeal TB, are not on effective anti-TB therapy, and have not been placed in TB isolation. (cdc.gov)
Orbicularis oris m2
- orbicularis oris muscle and buccinator muscle. (scirp.org)
- Insertion: orbicularis oris muscle at angle of mouth. (tipilandia.es)
Injections1
- Doctors treat vocal problems with a variety of therapies, such as laryngeal surgery and collagen injections to thicken thinning vocal cords. (undergroundhealthreporter.com)
Anatomy2
- Knowledge of normal laryngeal anatomy and physiology will help the pharmacist understand the etiology of VCD (Figure 1). (medscape.com)
- The app includes comprehensive male and female 3D gross anatomy models, select microanatomy of tissues and organs, cadaver slices and diagnostic images that are paired with 3D cross-sections, and interactive animations of muscles and bones. (visiblebody.com)
Mucosal1
- the presence of two small pouches on both sides of median laryngeal recess, and the cuneiform tubercle, which was a mucosal elevation that covered the cuneiform process. (advetresearch.com)
Nasal1
- This is to ensure the singer does not succumb to using compensatory muscles (which create excess laryngeal pressure) in lieu of nasal resonance. (playbill.com)
Pharynx2
- On each side of the laryngeal opening there is, in the pharynx, a small recess, directed downwards, which presents a wide entrance, but rapidly narrows towards. (co.ma)
- Furthermore, the studies have shown that there is a connection between's the branchiomeric muscles of vertebrates with the orobranchial muscles inside the pharynx of chordates. (vedantu.com)
Dog's1
- According to the canine eye specialist who eventually diagnosed my dog, extraocular myositis is caused by an allergic reaction that makes the muscles in the back of the dog's eyes begin to swell. (blogspot.com)
Diseases1
- Additionally, theoretical studies about some laryngeal diseases are presented and discussed, suggesting that previous and 'virtual' evaluations of surgical interventions will be feasible in the future. (scielo.br)
Neck muscles1
- One of the various neck muscles that surround the vertebral column and base of the skull and which are contained in the prevertebral cylinder of deep cervical fascia. (tipilandia.es)
Symptoms2
- [ 32 ] On the other hand, symptoms may remain limited to the extraocular and eyelid muscles for years. (medscape.com)
- Signs and symptoms of laryngeal cancer include a sore throat and ear pain. (emedicinehealth.com)
Cartilages2
- The dorsal wall of the laryngeal vestibule is narrow, and corresponds to the interval between the upper parts of the two arytenoid cartilages. (co.ma)
- Laryngeal cartilages, posterior view. (medscape.com)
Lateral cricoarytenoid2
- A new concept in laryngeal muscle: multiple myosin isoform types in single muscle fibers of the lateral cricoarytenoid. (unipd.it)
- Even when the lateral cricoarytenoid muscle remains functional, air leak occurs centrally through the paretic vocal cord, bowed from a lack of tension in the thyroarytenoid muscle as well as from atrophy and lack of mass within the vocal cord. (voicedoctor.net)
Epiglottis2
- The epiglottis is the structure that overlies the laryngeal inlet arising from the vallecula (Figure 1). (ispub.com)
- Using a curved laryngoscope (Macintosh), pressure applied to the vallecula lifts the epiglottis for visualization, utilizing a laryngoscope with a straight blade (Miller), the epiglottis is directly lifted for visualization of the laryngeal inlet. (ispub.com)
Insertion1
- 1. Describe the action, name, insertion and attachment of the primary muscles of inspiration for singing. (directcurrentmusic.com)
Patients1
- The objectives of this study were to determine appropriate acoustic and outcome measures for the evaluation of a method of laryngeal manual therapy (LMT) used in the treatment of patients with muscle tension dysphonia (MTD). (jvoice.org)
Respiration1
- L'enregistrement a été répété trois jours consécutifs (une condition par jour) en respiration spontanée, AIn (15/4 cmH[indice inférieur 2]O) et NAVAn (15/4 cmH[indice inférieur 2]O) dans un ordre randomisé. (usherbrooke.ca)
Diagnosis1
- If the etiology remains unclear, specialist consultation or muscle biopsy may be necessary to reach a diagnosis. (aafp.org)
Mucous membrane2
- Although the thyroarytenoideus muscle was undivided in the buffalo and camel, the slightly deeper lateral ventricle in camel, allowed the muscle anterior part to be covered with mucous membrane forming the vestibular fold. (advetresearch.com)
- A vestibuloplasty can only be achieved by relocating or repositioning the muscle attachments and mucous membrane covering it into a deeper or more apical position. (dentaldevotee.com)
Diaphragm1
- [ 14 ] The respiratory movements of the vocal cords are coordinated with those of the diaphragm and other muscles of the ventilator pump. (medscape.com)
Thyroarytenoid2
Major muscles1
- There are not oppressed as women or evidently more at play than is the only major muscles the recurrent laryngeal branch external carotid artery figure 64.1 (a) accessory ureteric bud ureteric bud. (psm.edu)
Include1
- An explanation of this unusual breathing pattern may include the laryngeal regulation of airflow. (cdc.gov)
Hyoid1
- Second, three hyoid muscles have lost their connection to the hyoid skeleton. (sussex.ac.uk)