QABiology › The sleep-wake cycle is ultimately controlled by the part of the brain called the:
Q

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

A

Answer: C. Suprachiasmatic nucleus

The suprachiasmatic nucleus, also known as the SCN, is a bilateral structure found in the anterior region of the hypothalamus of the brain. It is the controller of the circadian timing system responsible for all the circadian rhythms of the body. The sleep-wake cycle is controlled and regulated by this structure.

2 months ago
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