Alpha motor neurons send information to
A) intrafusal muscle fibers.
B) extrafusal muscle fibers.
C) muscle spindles.
D) gamma motor neurons.
E) alpha motor neurons.

Question

Quizplus · Accepted Answer

Alpha motor neurons send information to extrafusal muscle fibers, which are responsible for generating force and producing movement. In contrast, intrafusal muscle fibers are part of muscle spindles and play a role in sensing muscle length and tension. Gamma motor neurons also innervate intrafusal muscle fibers to regulate sensitivity of muscle spindles.

Alpha Motor Neurons Send Information to