Which of the following substances are released primarily at night in humans?
A) dopamine and melatonin
B) norepinephrine and growth hormone
C) melatonin and growth hormone
D) acetylcholine and melatonin

Question

Quizplus · Accepted Answer

Melatonin and growth hormone are primarily released at night in humans. Melatonin is a hormone that regulates the sleep-wake cycle, and its production is stimulated by darkness and inhibited by light. Growth hormone is responsible for tissue repair, cell regeneration, and growth, and its release is highest during deep sleep at night.

Which of the Following Substances Are Released Primarily at Night