The sleep-wake cycle is ultimately controlled by the part of the brain called the
A) optical nerve.
B) substantia nigra
C) suprachiasmatic nucleus.
D) median forebrain bundle.

Question

Quizplus · Accepted Answer

The suprachiasmatic nucleus, located in the hypothalamus, is the controlling factor in regulating the sleep-wake cycle. It receives input from the eyes regarding light exposure, which helps to synchronize the circadian rhythm.

The Sleep-Wake Cycle Is Ultimately Controlled by the Part of the Brain