The sympathetic nervous system operates (or is in primary control) during periods of
A) calm.
B) circadian activity.
C) relaxation.
D) stress.

Question

Quizplus · Accepted Answer

The sympathetic nervous system is responsible for the "fight or flight" response in the body, which is activated during times of stress or danger. Therefore, D is the best choice as it directly refers to this activation of the sympathetic nervous system. The other choices do not involve the activation of the sympathetic nervous system.

The Sympathetic Nervous System Operates (Or Is in Primary Control)