The _____ motor neuron directly controls the sensitivity of a muscle spindle.

Question

Quizplus · Accepted Answer

The gamma lower motor neuron directly controls the sensitivity of a muscle spindle by regulating the tension on the intrafusal muscle fibers within the spindle. This allows for more precise and controlled movements. Alpha motor neurons, on the other hand, directly innervate the extrafusal muscle fibers and are responsible for the contraction of the muscle. Upper and lower refer to the location of the motor neuron in the spinal cord.

The _____ Motor Neuron Directly Controls the Sensitivity of a Muscle