Alpha motoneurons innervate
A)nuclear chain fibers.
B)nuclear bag fibers.
C)extrafusal fibers.
D)intrafusal fibers.

Question

Quizplus · Accepted Answer

Alpha motoneurons innervate extrafusal fibers, which are the muscle fibers responsible for generating force and movement. Nuclear chain fibers and nuclear bag fibers are types of intrafusal fibers, which are specialized muscle fibers found within muscle spindles that are involved in detecting changes in muscle length and tension.

Alpha Motoneurons Innervate