-What is the stimulus that activates a muscle spindle, and what is the result of the activation?

Question

Quizplus · Accepted Answer

Muscle spindles are sensory receptors within the belly of a muscle that primarily detect changes in the length of the muscle and the speed of those changes. When activated by such changes, they trigger a reflex that leads to the activation of the muscle being lengthened, helping to resist further lengthening and protect the muscle from injury.

-What Is the Stimulus That Activates a Muscle Spindle, and What