A circadian rhythm refers to a cycle
A)of sexual receptivity caused by monthly hormone cycles in females.
B)of bodily functions and arousal that vary on a schedule approximating a 24-hour day.
C)of emotional stability that varies according to the phases of the moon.
D)during which various bodily systems are in a dysfunctional state.

Question

Quizplus · Accepted Answer

Circadian rhythms are natural, internal processes that regulate the sleep-wake cycle and repeat roughly every 24 hours, affecting various bodily functions and arousal levels.

A Circadian Rhythm Refers to a Cycle