pineal gland
Definition
The pineal gland is a small, pea-sized endocrine gland located in the brain that produces and secretes the hormone melatonin, which regulates sleep patterns. Its function is influenced by light exposure and it plays a significant role in regulating circadian rhythms.
Related terms
Melatonin: A hormone produced by the pineal gland that helps regulate sleep-wake cycles.
Circadian Rhythms: Biological processes that display an endogenous, entrainable oscillation of about 24 hours.
Endocrine System: A network of glands in the body that produce and secrete hormones to regulate various bodily functions
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