Circadian rhythms are controlled by the ________.
A) pineal gland
B) suprachiasmatic nucleus (SCN)
C) thalamus
D) hippocampus

Question

Circadian rhythms are controlled by the ________.
A) pineal gland 
B) suprachiasmatic nucleus (SCN) 
C) thalamus
D) hippocampus

Quizplus · Accepted Answer

The suprachiasmatic nucleus (SCN) is located in the hypothalamus and is responsible for regulating circadian rhythms, including sleep-wake cycles, body temperature, and hormone secretion. The pineal gland also plays a role in circadian rhythms by releasing the hormone melatonin, which helps regulate sleep-wake cycles, but it is not the primary control center. The thalamus is involved in sensory processing and relay, while the hippocampus is involved in memory formation and storage.

Circadian Rhythms Are Controlled by the ________