endocrine system

Asked by  | 29th Aug, 2008, 08:47: PM

Expert Answer:


Pineal gland produces melatonin, a hormone that affects the modulation of wake/sleep patterns and photoperiodic (seasonal) functions. The pineal gland is large in children, but shrinks at puberty. It appears to play a major role in sexual development, hibernation in animals, metabolism, and seasonal breeding. The abundant melatonin levels in children is believed to inhibit sexual development. In mammals other than humans melatonin possibly acts as a breeding and mating cue.

Answered by  | 29th Aug, 2008, 09:05: PM

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