Motor unit’s and their relation with Eelectromyograms (EMG)

Comment [A1]: Abbreviations are not usually
included in the title.

Motor unit :A single motor neuronmotoneuron and itsit’s axonaxons innervatesupply not only just a
muscle fiber, but also several muscle fibers; these fibers constitute . The muscl a mMotor

Comment [A2]: We have changed “it’s” to “its”
because this is a case of a possessive pronoun. The
use of “it’s” is incorrect because “it’s” a contractionof “it is” or “it has.”uUnit. The numberA variety of numbers of muscle fibers in a motor unit variesare present .
It in cThe motor unit of cat leg muscles that has approximately 120–, 165 fibers are present inone motor unit.
Electromyography:EMGA Mmotor unit activity is recordedmeasured bythrough insertingplacing a coaxial electrodein to the muscle of interestthat is tobe studied. Next, the electrode isthey are connected to anelectromyographelectromyography (EMG) and a. A recording of muscular activity, known as
an electromyogram, is obtained during muscular activity,. This recording is called anelectromyogram (EMG).
A hypodermichollow needle can be made converted intoin to a coaxial electrode byintroducing an insulatedinsolated inner wire with in into it. CPossible changes are recorded
from the small volume of the muscles are recorded in the immediate vicinityneighbuorhoodof the needle tip of the needle. Thus, it is has been observed that most the highest of theelectrical activity is observed from in the active fibers near the electrodes. Sometimes,
surface electrodes areis used in stead of deep muscle coaxial electrodeselectrode. In thisrecording method, two surface electrodes are placed at a reasonable distance on the skinoverlyingover the muscle to be studied muscle’s at a reasonable distance.
When the muscle is at rest, no action is potential is recorded; however, as soon as the muscle
becomes active, action potentials results fromare recorded. The potential recorded during
activity is as a result of the asynchronous discharge of motor neuronsmotoneurons in thevicinity of the electrodes. During minimal voluntary activity, only a few number of motor
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Comment [A3]: Sentences have been joined
together at this instance to present the intended
information in a more concise manner.

units are dischargeddischarges, and as voluntary effort activity increases, the more numberof units areis activated. This is called motor unitas recruitment of motor units.
The gGradation of muscular activity is a function of thea part of the function of a number ofactivated motor units activated. ElectromyographicElectromyographc studies are clinicallyimportanthave clinically importance in the diagnosisdiagnosiz of motor unit disorders,
including peripheral nerve injuries, and neuromuscular disorders, such asincluding myotonia
and myasthenia gravis, so on and so forth.

Comment [A4]: Redundant phrases make asentence wordy. Being economical in writing
enhances clarity (in terms of meaning) andreadability of the sentence. Here, the phrase “so on
and so forth” is not required as this is implied by theuse of “including.”
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