During REM (R)sleep,your skeletal muscles are relaxed because messages from the motor cortex are blocked by the
A) brainstem.
B) hypothalamus.
C) suprachiasmatic nucleus.
D) amygdala.

Question

Quizplus · Accepted Answer

During REM sleep, the brainstem sends inhibitory signals to the motor cortex, which prevents it from sending messages to the muscles. This is why we experience muscle paralysis during REM sleep, also known as atonia.

During REM (R)sleep,your Skeletal Muscles Are Relaxed Because Messages from the Motor