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COMLEX Osteopathic Medicine

Category - Motor

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Which type of motor neuron helps to keep muscles taut so they can be functional at variable lengths?

Alpha
Gamma
Both A and B
Neither A nor B

Explanation

Answer - B - Gamma motor neurons are responsible for innervating interfusal fibers which contract only slightly, allowing them to keep a muscle taut and functioning at variable and appropriate lengths based on the desired motor function.

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