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3. Damage to the ventral root causes the flaccid paralysis of the muscle served and muscle...

3. Damage to the ventral root causes the flaccid paralysis of the muscle served and muscle begins to atrophy. Why?

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Even at the stage of complete rest , a healthy muscle has a bit of tension in it. Due to this it doesn't feel feel flabby but resilient. The result of a lightly maintained flow of an asynchronous low frequency impulses from spinal cord, will be the palpable muscle firmness. The spinal cord help in generating a small contraction of a smaller skeletal muscle fibers along with a random degree of active tension.

The basic muscle tone is lost immediately when a the functioning of the ventral roots is impaired. This also happens in cases when the dorsal roots which have sensory fibers from the muscles get damaged. Hence, the tone must and always should be considered the property of reflex activity rather than the muscle itself.

The result of weakness from disuse in some muscle atrophy happens in any lesion. The losing of innervation to the muscles results in Fasciculations and the atrophy is a pronounced occurrence in many LMN lesions. These signify a complete damage in any of the axons or in the anterior horn cells.

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