The internal clock of mammals appears to be located in the
A) suprachiasmatic nucleus.
B) pituitary gland.
C) choroid plexus.
D) pons.
E) brain stem.

Question

Quizplus · Accepted Answer

The suprachiasmatic nucleus (SCN) is a small region in the hypothalamus of the brain that is responsible for regulating the circadian rhythms of the body, including the sleep-wake cycle. It receives input from the eyes about light levels, which helps to synchronize the internal clock with the external environment. Studies have shown that damage to the SCN can disrupt circadian rhythms, leading to problems with sleep, hormone regulation, and other physiological functions.

The Internal Clock of Mammals Appears to Be Located in the