Which part of the skeletal muscle is involved in the stretch reflex mechanism?
A)Extrafusal fibers
B)Intrafusal fibers
C)Capsule
D)All of the above

Question

Quizplus · Accepted Answer

Intrafusal fibers of the skeletal muscle is involved in the stretch reflex mechanism.
Intrafusal fibers are small, paralleled to extrafusal fibers, and encapsulated. From here, afferent impulses are taken to the stretch receptor at the spinal cord.
Extrafusal fibers are large ordinary fibers.

Which Part of the Skeletal Muscle Is Involved in the Stretch