The sleep-wake cycle typically follows a 24-hour cycle and is regulated by the __________.
A) suprachiasmatic nucleus
B) cerebellum
C) frontal lobe
D) pituitary gland

Question

Quizplus · Accepted Answer

The suprachiasmatic nucleus (SCN) is a small structure in the hypothalamus that helps to regulate the body's circadian rhythm, or sleep-wake cycle. The SCN receives input from the eyes, which helps to synchronize the body's internal clock with external cues such as light and darkness. The SCN then sends signals to other parts of the brain and body to promote wakefulness or sleep as appropriate for the time of day.

The Sleep-Wake Cycle Typically Follows a 24-Hour Cycle and Is