Increasing gamma motor neuron activity would directly cause what effect on muscle fiber activity?
A) extrafusal fibers contract
B) intrafusal fibers contract
C) extrafusal fibers relax
D) intrafusal fibers relax

Question

Quizplus · Accepted Answer

Gamma motor neurons innervate intrafusal muscle fibers within muscle spindles. Increasing their activity would cause contraction of these intrafusal fibers.

Increasing Gamma Motor Neuron Activity Would Directly Cause What Effect