The stretch reflex
A) is an adaptation that enables humans to hold objects steadily for extended periods if time.
B) is activated by stretch-sensitive receptors inside the muscle spindles.
C) is a simple, stereotyped, and repeatable motor action.
D) is elicited by a sensory stimulus.
E) all of these

Question

Quizplus · Accepted Answer

The stretch reflex is a simple, stereotyped, and repeatable motor action (C) that is elicited by a sensory stimulus (D) and is activated by stretch-sensitive receptors inside the muscle spindles (B). It helps maintain posture and enables humans to hold objects steadily (A).

The Stretch Reflex