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

Question

Quizplus · Accepted Answer

The suprachiasmatic nucleus (SCN) is a small group of cells located in the hypothalamus that acts as the body's internal biological clock. It receives information about light and darkness from the optic nerve and sends signals to other parts of the brain and body to regulate the sleep-wake cycle. The substantia nigra and median forebrain bundle are not directly involved in the regulation of the sleep-wake cycle.

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