The _____, also called the biological clock, consists of a pair of tiny structures in the brain's hypothalamus that control the timing of the circadian rhythms.
A)amygdala
B)suprachiasmatic nucleus
C)pineal gland
D)hypothalamic nucleus

Question

Quizplus · Accepted Answer

The suprachiasmatic nucleus (SCN) is a pair of tiny structures in the hypothalamus that serve as the body's biological clock, controlling the circadian rhythms such as sleep-wake cycles, hormone production, and body temperature. The amygdala is a brain region associated with emotion and fear processing, the pineal gland produces the hormone melatonin which regulates sleep, and there is no such thing as the hypothalamic nucleus.

The _____, Also Called the Biological Clock, Consists of a Pair