What hormone is thought to play a role in circadian rhythms?
A) dopamine
B) melatonin
C) estrogen
D) prolixin

Question

Quizplus · Accepted Answer

Melatonin is a hormone that is thought to play a key role in regulating circadian rhythms. Melatonin is produced by the pineal gland in the brain and is involved in the sleep-wake cycle. The production of melatonin is regulated by the amount of light exposure, with levels being highest at night and lowest during the day. This helps to promote wakefulness during the day and sleep at night.

What Hormone Is Thought to Play a Role in Circadian