Length muscle fiber conduction. Medical search. Frequent questions

The time an impulse takes to traverse a measured length of nerve determines conduction velocity. (merckmanuals.com)
Thus, conduction velocity is slowed more when larger myelinated fibers are damaged. (merckmanuals.com)
When unmyelinated axons are damaged, the amplitude of the action potential is decreased, but conduction velocity is relatively unimpaired. (merckmanuals.com)
When a specific neuropathy primarily affects large myelinated fibers, the predominant effect is a decrease in conduction velocity. (merckmanuals.com)
Which assists to increase the conduction velocity of nerve impulses? (fsu.edu)
However, there is no unanimous agreement, less especially about the nomenclature of the recessive and intermediate-conduction velocity subtypes. (medscape.com)
Without such selective markers, γ-MN identity has been based routinely on cell size or physiological differences in conduction velocity. (biomedcentral.com)
Slowed nerve conduction velocity and conduction block can be observed at sites susceptible for compression while other regions are unaffected 10 , 11 . (biorxiv.org)
Motor nerve conduction velocity (MNCV) and compound muscle action potential (cMAP), which measure changes in the rate of impulse conduction velocity and amplitude, revealed a progression of impairment that was directly correlated with the duration of M. leprae infection and enabled development of an objective nerve impairment scoring system. (bvsalud.org)
Several research articles have attempted to identify changes on electromyograms/nerve conduction velocity studies that may be unique to patients with myofascial pain. (medscape.com)
Since the firing rate of these neurons varies with the degree and velocity of stretch, the CNS is continually informed of the ever-changing status of muscle tone and movement. (humanneurobiology.com)
The presence of myelin also increases conduction velocity. (aneskey.com)

This enhanced signal transmission is called saltatory conduction (from the Latin saltare , to jump or hop). (gsu.edu)
Specifically, the biggest gains will be seen with cross-sectional area (feel free to ask why on physics.stackexchange.com) and neurons with myelin sheathes (fat wrappings which affect saltatory conduction rates). (stackexchange.com)

The time required to traverse the segment nearest the muscle is called distal latency. (merckmanuals.com)
The neural elements of somatosensory receptors in the hands and feet represent the distal extreme of long afferent fibers, and thus, are par- ticularly vulnerable in the distal axonopathies. (cdc.gov)
A traditional distal leg biopsy was obtained at 15mo for intraepidermal nerve fiber (IENF) density. (bvsalud.org)
M. leprae infection is associated with sustained Schwann cell proliferation and distal limb nerve fiber loss. (bvsalud.org)
Distal ulnar sensory conduction studies were normal but proximal ulnar sensory conduction studies showed absence of Erb's point potential. (lookformedical.com)

Skeletal muscle fibers are the only muscle cells that are multinucleated with the nuclei usually referred to as myonuclei. (wikipedia.org)
Other spindle afferents directly excite large alpha motor neurons innervating skeletal muscle fibers. (humanneurobiology.com)
These tissues include the skeletal muscle fibers, blood vessels, nerve fibers, and connective tissue. (openstax.org)
Skeletal muscle fibers can be quite large for human cells, with diameters up to 100 μ m and lengths up to 30 cm (11.8 in) in the Sartorius of the upper leg. (openstax.org)

However, when neuropathies affect only small umyelinated or thinly myelinated fibers (or when weakness is due to a muscle disorder), the amplitude of action potentials is decreased and nerve conduction velocities are typically normal. (merckmanuals.com)
In the late 1960s, neurophysiologic testing allowed the classification of CMT into 2 groups, one with slow nerve conduction velocities and histologic features of a hypertrophic demyelinating neuropathy (hereditary motor and sensory neuropathy type 1 or CMT1) and another with relatively normal velocities and axonal and neuronal degeneration (hereditary motor and sensory neuropathy type 2 or CMT2). (medscape.com)
Traditionally, CMT pathophysiology has been categorized into 2 processes: a predominant demyelinating process resulting in low conduction velocities (CMT1) and a predominant axonal process resulting in low potential amplitudes (CMT2). (medscape.com)
This allows for continuous control of the mechanical sensitivity of spindles over the wide range of lengths and velocities that occur during normal motor behaviors [ 1 ]. (biomedcentral.com)

Proper expression of the peripheral myelin protein of 22 kDa (PMP22), an integral constituent of the compact myelin sheath, is important for development and function of peripheral nerve fibers. (biorxiv.org)
The central nervous system receives somatosensory information from different receptors and peripheral nerve fibers, which are integrated by synaptic processes. (frontiersin.org)

The electrical impulse propagates down the fiber-like extension of the nerve cell (the axon). (gsu.edu)
The axon is made up of connected segments of length about 2 mm and diameter typically 20 m m. (gsu.edu)
The illustration below is a schematic representation of the process from the arrival of a nerve signal to the terminal bundle of the nerve axon to the contration of a muscle fiber. (gsu.edu)
When the nerve signal from the somatic nerve system reaches the muscle cell, voltage-dependent calcium gates open to allow calcium to enter the axon terminal. (gsu.edu)
Fusimotor axons originate either from gamma motor neurons (γ-MNs), which only innervate intrafusal fibers of the muscle spindle, or from alpha motor neurons (α-MNs), which innervate extrafusal muscle and also send a β-skeletofusimotor collateral axon to innervate the muscle spindle [ 2 - 4 ]. (biomedcentral.com)
Each neuron contains one axon that connects it to other neurons, muscle cells, or glandular cells. (thesciencenotes.com)
The length of an axon can range from 1 millimeter in the brain to over 1 meter in the spinal cord. (thesciencenotes.com)
Information is transmitted through the axon to various neurons, muscles, and glands. (thesciencenotes.com)
The axon is a long fiber, branched at the end. (edignite.com)
The myelinated nerve fibers are enveloped with Schwann cells, which form the myelin sheath around the axon. (edignite.com)
Depolarization is very rapid, so that conduction of nerve impulse along the entire length of axon occurs in fractions of the second. (edignite.com)
In addition, every muscle fiber in a skeletal muscle is supplied by the axon branch of a somatic motor neuron, which signals the fiber to contract. (openstax.org)

The myelin sheaths are about 1mm in length. (gsu.edu)
an autoimmune disease that attacks the myelin sheathing necessary for the fast conduction of sensory nerves, resulting in sensory loss and paresthesias. (medictests.com)

When stretched, muscle spindles become activated, causing an increase in the impulse firing rate of afferent nerve fibers from the spindles to the spinal cord. (humanneurobiology.com)

Gamma motor neurons (γ-MNs) selectively innervate muscle spindle intrafusal fibers and regulate their sensitivity to stretch. (biomedcentral.com)
Spindles contain two types of intrafusal fibers. (humanneurobiology.com)

Myoblasts fuse from multinucleated skeletal muscle cells known as syncytia in a process known as myogenesis. (wikipedia.org)

In skeletal muscle, at the end of each muscle fiber, the outer layer of the sarcolemma combines with tendon fibers at the myotendinous junction. (wikipedia.org)
Theater performances, particularly a blue tint, assess muscle strength and deep tendon reflexes periodically in patients on longterm therapy with Plaquenil. (aerosail.com)
In skeletal muscles that work with tendons to pull on bones, the collagen in the three tissue layers (the mysia) intertwines with the collagen of a tendon. (openstax.org)
The tension created by contraction of the muscle fibers is then transferred though the mysia, to the tendon, and then to the periosteum to pull on the bone for movement of the skeleton. (openstax.org)
Occasionally retracted muscles can be reattached to the bone by using a tension-free autograft augmentation reattachment with fascia lata autograft [, Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window), Click to share on Google+ (Opens in new window), Tendon Injuries in the lower limb Diagnosis and Classification, Injury Prevention Programs - The "FIFA 11+", Epidemiology, Risk Factors, and Prevention. (wsoinsiders.com)
Hamstring injuries that disrupt the central tendon enclosed within the muscle belly require a longer recovery time than those injuries involving only muscle, epimysial fascia, or the musculotendinous junction. (wsoinsiders.com)

A junction between two adjoining cells is marked by a critical structure called an intercalated disc , which helps support the synchronized contraction of the muscle. (lumenlearning.com)

It increases the metabolism of tissues and conduction of nerves in the skin, allowing them to function better. (easyposturebrands.com)
When the muscle activity changes in the presence of altered strain patterns, there is a diminution of lymphatic drainage function affecting those tissues. (peertechzpublications.com)
Each skeletal muscle is an organ that consists of various integrated tissues. (openstax.org)
The epimysium also separates muscle from other tissues and organs in the area, allowing the muscle to move independently. (openstax.org)

The somatic neural system relays impulses from the CNS to skeletal muscles. (edignite.com)
Autonomic and somatic neural fibers are non-myelinated. (edignite.com)
Somatic reflexes, for instance, involve a direct connection from the ventral horn of the spinal cord to the skeletal muscle. (usk.ac.id)

Ulnar motor conduction study revealed proximal conduction block near the axilla, at the point of pressure by the crutch while walking. (lookformedical.com)
The typical patient with GBS, which in most cases will manifest as acute inflammatory demyelinating polyradiculoneuropathy (AIDP), presents 2-4 weeks following a relatively benign respiratory or gastrointestinal illness with complaints of finger dysesthesias and proximal muscle weakness of the lower extremities. (medscape.com)

The infrared segment of the electromagnetic spectrum is divided into three segments by wave frequencies and wave lengths. (thebiomat.co)

These disorders include motor neuron diseases such as amyotrophic lateral sclerosis (ALS) and spinal muscular atrophy (SMA), which may involve motor neurons in the brain, spinal cord, and periphery, ultimately weakening the muscle. (medscape.com)
If tone in a particular muscle decreases, allowing the muscle to lengthen, the spindles become stretched and trigger increased impulse firing in the spindle afferents, thereby increasing the firing rate of the alpha motor neurons to that same muscle and causing it to contract. (humanneurobiology.com)
Their function is similar in many respects to neurons, although they are specialized muscle cells. (lumenlearning.com)

Smooth muscle cells control involuntary movements such as the peristalsis contractions in the esophagus and stomach. (wikipedia.org)
For example, a non-physiological movement, a harmless sprain, faulty posture or muscle contractions. (barralinstitute.cz)
Myocardial conduction cells initiate and propagate the action potential (the electrical impulse) that travels throughout the heart and triggers the contractions that propel the blood. (lumenlearning.com)
Cardiac muscle cells undergo twitch-type contractions with long refractory periods followed by brief relaxation periods. (lumenlearning.com)
These actions can be voluntary, such as moving your arm, or involuntary like the muscle contractions that help move food through your digestive tract. (healthline.com)
This heat is very noticeable during exercise, when sustained muscle movement causes body temperature to rise, and in cases of extreme cold, when shivering produces random skeletal muscle contractions to generate heat. (openstax.org)

Axons are extremely small neural fibers that transfer nerve impulses from one neuron to another neuron. (thesciencenotes.com)

The autonomic neural system transmits impulses from the CNS to the involuntary organs and smooth muscles of the body. (edignite.com)
The connection between autonomic fibers and target effectors is not the same as the typical synapse, such as the neuromuscular junction. (usk.ac.id)

As contraction increases, the number of muscle action potentials increases, forming an interference pattern. (merckmanuals.com)
An international research team based at The University of Texas at Dallas has made electrically conducting fibers that can be reversibly stretched to over 14 times their initial length and whose electrical conductivity increases 200-fold when stretched. (sciencedaily.com)
The research team is using the new fibers to make artificial muscles, as well as capacitors whose energy storage capacity increases about tenfold when the fibers are stretched. (sciencedaily.com)

Nuclear bag fibers typically have greater diameters and are longer than chain fibers. (humanneurobiology.com)
Compared to the giant cylinders of skeletal muscle, cardiac muscle cells, or cardiomyocytes, are considerably shorter with much smaller diameters. (lumenlearning.com)

Needle EMG studies of the lateral pterygoid have been done correlating surface activity of other muscles as reported in the "Masticatory Muscle Function: A Multichannel Electromyographic Investigation", by Paul Koole a Danish dentist/ researcher. (occlusionconnections.com)

Muscle and buy viagra fedex nerve biopsies have been associated with curvilinear bodies and muscle fiber atrophy with vacuolar changes 60 off 8 days ago Cleckleyfloors Cialis Promo Codes. (aerosail.com)
In an effort to simulate the compromised function and atrophy of lower limb muscles experienced by astronauts after spaceflight, 21 men and women age 30-56 yr were subjected to unilateral lower limb unloading for 5 wk. (lookformedical.com)
The results of this study provide evidence that resistance exercise not only may offset muscle atrophy but is in fact capable of promoting marked hypertrophy of chronically unloaded muscle. (lookformedical.com)

In neuropathy, conduction is often slowed, and the response pattern may show a dispersion of action potentials due to unequal involvement of myelinated and unmyelinated nerve fibers. (merckmanuals.com)

Histologic changes - specifically, findings of degenerating muscle fibers, a variation in fiber size, focal necrosis, regeneration, and a proliferation of connective tissue, as well as fatty replacement of degenerated muscles - point to a muscular dystrophy. (medscape.com)

Indeed, treatment of DRG co-cultures from HNPP mice with PI3K/Akt/mTOR pathway inhibitors reduced focal hypermyelination and, importantly, treatment of HNPP mice with the mTOR inhibitor Rapamycin improved motor behavior, increased compound muscle amplitudes (CMAP) and reduced tomacula formation in the peripheral nerve. (biorxiv.org)

The first approach to characterize the stimulation of small fibers is the strength-duration relationship approach (S-D curve), which shows the threshold relationship between pulse amplitude and duration. (frontiersin.org)

The term muscular dystrophy (MD) refers to a heterogeneous group of genetic disorders that typically result in progressive degeneration followed by incomplete regeneration of skeletal muscles, ultimately resulting in the loss of contractile tissue. (medscape.com)
In contrast to MD, the term myopathy generally refers to acquired or congenital muscle disorders that typically do not demonstrate ongoing cycles of degeneration/regeneration, but still result in weakness and disability due to loss of contractile function. (medscape.com)
When a nerve is fixed, it typically looses its ability to glide and/or stretch in length. (barralinstitute.cz)

There are three types of myofilaments: thin, thick, and elastic that work together to produce a muscle contraction. (wikipedia.org)
Scientists describe in a new study how they constructed elastic conducting fibers by wrapping lighter-than-air, electrically conductive sheets of tiny carbon nanotubes to form a jelly-roll-like sheath around a long rubber core. (sciencedaily.com)
One key to the performance of the new conducting elastic fibers is the introduction of buckling into the carbon nanotube sheets. (sciencedaily.com)

Loss of muscle spindles also results in the downregulation of Gfrα1 expression in some large diameter MNs, suggesting that spindle-derived factors may also influence populations of α-MNs with β-skeletofusimotor collaterals. (biomedcentral.com)
a larger diameter correlates with more rapid nerve conduction. (aneskey.com)

Electrical stimulation of specific small fibers (Aδ- and C-fibers) is used in basic studies on nociception and neuropathic pain and to diagnose neuropathies. (frontiersin.org)

Surviving axons branch to innervate adjacent muscle fibers, enlarging the motor unit and producing giant muscle action potentials. (merckmanuals.com)
They constitute a distinct subpopulation that differs in morphology, physiology and connectivity from α-MNs, which innervate extrafusal muscle fibers and exert force. (biomedcentral.com)

and the cell membrane in a muscle cell is termed the sarcolemma. (wikipedia.org)
The sarcoplasmic reticulum serves as a reservoir for calcium ions, so when an action potential spreads over the T-tubule, it signals the sarcoplasmic reticulum to release calcium ions from the gated membrane channels to stimulate muscle contraction. (wikipedia.org)
The cell membrane of a cardiac muscle cell has several specialized regions, which may include the intercalated disc, and transverse tubules. (wikipedia.org)
The cell membrane is anchored to the cell's cytoskeleton by anchor fibers that are approximately 10 nm wide. (wikipedia.org)
The lower tip of the heart, called the apex, points toward the left hip and rests on the diaphragm (a membrane of muscle separating the chest cavity from the abdominal cavity). (encyclopedia.com)
Membrane of muscle separating the chest cavity from the abdominal cavity. (encyclopedia.com)
When a nerve fiber is stimulated, the permeability of the membrane to Na+ is greatly increased at the point of stimulus (rapid influx of Na+) and hence polarity of the membrane is reversed and now membrane is said to be depolarized. (edignite.com)
Under normal or resting circumstances, the neural membrane is characterized by a negative potential of roughly -90 mV (the potential inside the nerve fiber is negative relative to the extracellular fluid). (aneskey.com)

Here, we will examine how muscle tone is regulated both by the brain and spinal cord and how the brain is kept informed of the ever-changing status of this tone. (humanneurobiology.com)
A full reflex arc is from a sensory neuron to the spinal column and back out to the muscles. (stackexchange.com)

GFP display structural and synaptic features of γ-MNs and are selectively lost in mutants lacking target muscle spindles. (biomedcentral.com)
With these markers of γ-MN identity, we show after conditional elimination of GDNF from muscle spindles that the survival of γ-MNs is selectively dependent on spindle-derived GDNF during the first 2 weeks of postnatal development. (biomedcentral.com)
Deletion of GDNF expression from muscle spindles results in the selective elimination of γ-MNs with preservation of the spindle and its sensory innervation. (biomedcentral.com)
Muscle spindles provide proprioceptive information required for motor control. (biomedcentral.com)
Unlike other mechanoreceptors, the sensitivity of muscle spindles is actively regulated by a specialized fusimotor system. (biomedcentral.com)
Phylogenetically, γ-MNs are best developed in mammals, whereas lower vertebrates (for example, amphibians) use a β-skeletofusimotor system alone to control the sensitivity of their muscle spindles. (biomedcentral.com)
Muscle spindles are encapsulated units within the belly of a muscle that lie parallel to the muscle fibers, stretching when the muscle is stretched and shortening when the muscle contracts. (humanneurobiology.com)
This is an important capability, allowing the CNS to keep the spindles 'in tune' with the muscles. (humanneurobiology.com)
These and other functions of the muscle spindles, as well as the tension-sensitive organs in tendons, will be discussed. (humanneurobiology.com)
Muscle spindles are found in all skeletal muscles. (humanneurobiology.com)
The greatest percentage of spindles are located in the belly of the muscle. (humanneurobiology.com)
Keep in mind that the entire circuit (from pre-motor cortex to muscle spindles) will involve several different types. (stackexchange.com)

Myasthenia Gravis Myasthenia gravis is characterized by episodic muscle weakness and easy fatigability caused by autoantibody- and cell-mediated destruction of acetylcholine receptors. (merckmanuals.com)
This tone is ultimately controlled by impulses from the brain, though special receptors in the muscles themselves are also instrumental in its regulation. (humanneurobiology.com)
The brain relies on input from these receptors as well as those in tendons and joints to give it the information it needs to direct smooth and coordinated muscle movements. (humanneurobiology.com)

The spinocerebellar pathway transmits information to the cerebellum about muscle fiber length and tension and serves to communicate an unconscious proprioceptive sensation (position and movement). (medictests.com)
It transmits taste sensations from your tongue and also controls movement of some of the muscles in your face. (healthline.com)

Assessment of epidermal nerve fiber density (ENFD), which shows a length-dependent innervation in armadillos that is similar to humans, identified small fiber degeneration early after M. leprae infection. (bvsalud.org)

The motor pathway known as the extrapyramidal system controls involuntary movements including posture and muscle tone and do not travel to the medullary pyramids. (medictests.com)

The thin myofilaments are filaments of mostly actin and the thick filaments are of mostly myosin and they slide over each other to shorten the fiber length in a muscle contraction. (wikipedia.org)
In striations of muscle bands, myosin forms the dark filaments that make up the A band. (wikipedia.org)
Muscle fibers contract by the action of actin and myosin sliding past each other. (gsu.edu)

It is the most effective way to deal with pain at home, as it numbs the area and reduces muscle spasms. (easyposturebrands.com)
Simply applying a hot pack to the area can decrease muscle tension and spasms while giving a relaxing sensation. (easyposturebrands.com)
Reduce muscle spasms as muscle fibers are heated. (thebiomat.co)

Techniques focusing on single-fiber conduction may be more sensitive for detecting changes associated with neuromuscular junction disorders such as myasthenia gravis. (merckmanuals.com)
Mutations of Na V 1.4 give rise to a heterogeneous group of muscle disorders, with gain-of-function defects causing myotonia or hyperkalemic periodic paralysis. (jci.org)
This is valuable in the muscle activity associated with dental occlusion whether temporomandibular disorders exist or not. (occlusionconnections.com)
Chemical and metabolic testing of the blood can indicate some muscle disorders, protein or fat-related disorders that affect the brain and inborn errors of metabolism. (medlink.com)

By adding a thin overcoat of rubber to the sheath-core fibers and then another carbon nanotube sheath, the researchers made strain sensors and artificial muscles in which the buckled nanotube sheaths serve as electrodes and the thin rubber layer is a dielectric, resulting in a fiber capacitor. (sciencedaily.com)
In contrast, electromyographic techniques using bipolar (paired) silver-silver chloride surface electrodes placed along the long axis of muscles groups provide data related to the collective electrical activity of a large group of muscle fiber units. (occlusionconnections.com)
The article reported that placing surface EMG electrodes on the masseter muscles will yield information regarding the masseter as well as the pterygoid muscles. (occlusionconnections.com)
Intraepidermal electrical stimulation (IES) using a small concentric bipolar needle electrode that injects a current of a few mA to generate a focal electric field around the electrodes can selectively stimulate small fibers ( Inui and Kakigi, 2012 ). (frontiersin.org)

The weakness may progress over hours to days to involve the arms, truncal muscles, cranial nerves, and muscles of respiration. (medscape.com)

Each skeletal muscle has three layers of connective tissue (called "mysia") that enclose it and provide structure to the muscle as a whole, and also compartmentalize the muscle fibers within the muscle ( Figure 10.3 ). (openstax.org)
Each muscle is wrapped in a sheath of dense, irregular connective tissue called the epimysium , which allows a muscle to contract and move powerfully while maintaining its structural integrity. (openstax.org)
Figure 10.3 The Three Connective Tissue Layers Bundles of muscle fibers, called fascicles, are covered by the perimysium. (openstax.org)
The broad sheet of connective tissue in the lower back that the latissimus dorsi muscles (the "lats") fuse into is an example of an aponeurosis. (openstax.org)

autoimmune disease group any one of which attacks the muscle fibers or is congenital, resulting in weakness. (medictests.com)

When determining whether weakness is due to a nerve, muscle, or neuromuscular junction disorder is clinically difficult, these studies can identify the affected nerves and muscles. (merckmanuals.com)
Hypokalemic periodic paralysis (HypoPP) is an ion channelopathy of skeletal muscle characterized by attacks of muscle weakness associated with low serum K + . HypoPP results from a transient failure of muscle fiber excitability. (jci.org)

Nerve fibers are known as myelinated axons. (thesciencenotes.com)

Some MDs and myopathies affect cardiac and smooth muscle, in addition to other organs, including the brain. (medscape.com)
Unlike cardiac and smooth muscle, the only way to functionally contract a skeletal muscle is through signaling from the nervous system. (openstax.org)

The stimulation of muscle action is associated with the neurotransmitter chemical acetylcholine . (gsu.edu)
Skip to main content, of a small limb muscle in response to nerve stimulation. (aerosail.com)
For selective stimulation of small fibers, the optimal stimulation waveform parameters are an important aspect together with the study of electrode design. (frontiersin.org)
However, determining an optimal stimulation condition is challenging, as it requires the characterization of the response of the small fibers to electrical stimulation. (frontiersin.org)
In this study, we designed an experiment to characterize the effects of multiple pulse stimulation and proposed a computational model that considers electrostimulation of fibers and synaptic effects in a multiscale model. (frontiersin.org)
Different stimulation parameters (for example, duration, interstimulus interval, waveform, and electrode polarity) have been proposed to facilitate the selective stimulation of Aδ- and C-fibers. (frontiersin.org)
anterior stimulation alterations are ultimately pacing required at agonist, kinase, 1 patient, and 6 muscles as a sexual product of the mechanism. (siriuspixels.com)

Even though cardiac muscle has autorhythmicity, heart rate is modulated by the endocrine and nervous systems. (lumenlearning.com)
it allows the nervous system to trigger a specific movement of a muscle by activating a subset of muscle fibers within a bundle, or fascicle of the muscle. (openstax.org)

The endomysium contains the extracellular fluid and nutrients to support the muscle fiber. (openstax.org)

Electromyography also may assist in identifying which muscle groups would be optimal for biopsy. (medscape.com)
Standard muscle biopsy alone does not support a diagnosis of BMD. (medscape.com)

Using this knowledge we characterized genetic strategies to label developing γ-MNs based on GDNF receptor expression, showed their strict dependence for survival on muscle spindle-derived GDNF and generated an animal model in which γ-MNs are selectively lost. (biomedcentral.com)
GFP and NeuN - and the selective dependence on muscle spindle-derived GDNF. (biomedcentral.com)
The advantages of a γ-fusimotor system to control spindle sensitivity independently of force-generating extrafusal muscle fibers are not fully understood, nor are the mechanisms that generate the distinct γ- and α-MN subtypes in mammals. (biomedcentral.com)
The principal regulator of muscle tone is the small stretch-sensitive intramuscular unit called the muscle spindle. (humanneurobiology.com)
A typical muscle spindle might contain up to eight chain and one or two bag fibers. (humanneurobiology.com)

Another electrical property is conductivity, which is characterized by a conduction and activation process, where the action potential, by the all-or-nothing law, travels throughout the heart. (bvsalud.org)

For example, when conventional fibers are stretched, the resulting increase in length and decrease in cross-sectional area restricts the flow of electrons through the material. (sciencedaily.com)

Heart:Authoriticity and conductivity of the heart muscle. (uninsubria.eu)

Skeletal muscles also protect internal organs (particularly abdominal and pelvic organs) by acting as an external barrier or shield to external trauma and by supporting the weight of the organs. (openstax.org)

Anatomy70

Organisms23

Diseases27

Chemicals and Drugs39

Analytical, Diagnostic and Therapeutic Techniques and Equipment25

Psychiatry and Psychology2

Phenomena and Processes49

Disciplines and Occupations5

Anthropology, Education, Sociology and Social Phenomena2

Technology, Industry, Agriculture2

Information Science4

Health Care4

Velocity12

Saltatory conduction2

Distal5

Skeletal muscle fibers4

Velocities4

Peripheral nerve fibers2

Axon12

Myelin2

Afferent1

Intrafusal fibers2

Multinucleated skeletal muscle cells1

Tendon6

Contraction of the muscle1

Tissues4

Somatic3

Proximal2

Electromagnetic1

Neurons3

Contractions6

Nerve impulses1

Autonomic2

Increases3

Diameters2

Needle EMG1

Atrophy3

Neuropathy1

Histologic1

Compound muscle1

Amplitude1

Typically3

Elastic3

Diameter2

Neuropathies1

Innervate2

Membrane8

Spinal2

Spindles12

Receptors3

Transmits2

Degeneration1

Involuntary1

Myosin3

Spasms3

Disorders4

Electrodes4

Cranial nerves1

Connective tissue4

Congenital1

Weakness2

Axons1

Cardiac and smooth muscle2

Stimulation7

Nervous2

Extracellular fluid1

Biopsy2

Spindle5

Action potential1

Decrease1

Conductivity1

Organs1