AP PSYCHOLOGY

Detailed explanation-1: -Melatonin is a hormone that’s mainly produced by your pineal gland. The importance of pineal melatonin in humans is not clear, but many researchers believe it may help to synchronize circadian rhythms in different parts of your body.

Detailed explanation-2: -Melatonin secreted by the pineal gland is an important part of the body’s circadian timing system and can synchronise daily rhythms (see the articles on jet lag and circadian rhythm sleep disorders). Melatonin is secreted more when it is dark which explains melatonin’s role in sleep.

Detailed explanation-3: -Melatonin is an important hormone in circadian synchronization. This hormone is involved in many biological and physiological regulations in the body. It is an effective hormone for human biorhythm (circadian rhythm). The main role of this hormone is to maintain the biological clock and to adjust the body rhythm [25].

Detailed explanation-4: -Melatonin: The Pineal Gland Hormone This simple hormone is special because its secretion is dictated by light. Researchers have determined that melatonin has two primary functions in humans-to help control your circadian (or biological) rhythm and regulate certain reproductive hormones.