A sudden stretch of a muscle excites a feedback system that opposes the stretch. This message starts in the ____.
A) dorsal root ganglion
B) cerebellum
C) Pacinian corpuscles
D) muscle spindles

Question

Quizplus · Accepted Answer

Muscle spindles are proprioceptive sensory receptors within the muscle tissue that detect changes in muscle length and rate of change in length. When a sudden stretch occurs, the muscle spindle sends a message to the central nervous system, which triggers a reflex contraction of the muscle, opposing the stretch.

A Sudden Stretch of a Muscle Excites a Feedback System