Melatonin is released primarily during the _____ of the circadian cycle.
A) dark
B) light
C) midday portion
D) early morning portion

Name: Melatonin is released primarily during the _____ of the circadian cycle. A) dark B) light C) midday portion D) early morning portion
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Question

Quizplus · Accepted Answer

Melatonin is released by the pineal gland primarily during the dark phase of the circadian cycle. The secretion of melatonin is higher at night and lower during the day, which helps to regulate the sleep-wake cycle.

Melatonin Is Released Primarily During the _____ of the Circadian