The hormone that appears to help regulate our sleep-awake cycles is ________.
A) thymosin
B) melatonin
C) progesterone
D) glucagon
E) thyroxine

Question

Quizplus · Accepted Answer

Melatonin is the hormone that helps regulate our sleep-awake cycles. It is produced by the pineal gland in the brain and is involved in the body's circadian rhythms. Melatonin levels increase in the evening and decrease in the morning, helping us feel sleepy at night and more alert during the day.

The Hormone That Appears to Help Regulate Our Sleep-Awake Cycles