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Pineal Gland


Updated June 11, 2009

Definition: The pineal gland is part of the endocrine system. A small cone-shaped organ located in the cerebrum, the pineal gland produces the hormone melatonin, which regulates the sleep/wake cycle. Additionally, the pineal gland helps regulate blood pressure, body temperature, motor function, growth and sexual development.
Also Known As: pineal body, pineal organ, epiphysis cerebri
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