Pineal gland
The pineal gland (also called the pineal body) is a small endocrine gland in the brain of most vertebrates. It produces melatonin, a serotonin-derived hormone, which modulates sleep patterns following the diurnal cycles.
The pineal gland (also called the pineal body) is a small endocrine gland in the brain of most vertebrates. It produces melatonin, a serotonin-derived hormone, which modulates sleep patterns following the diurnal cycles.
The pineal gland (also called the pineal body) is a small endocrine gland in the brain of most vertebrates. It produces melatonin, a serotonin-derived hormone, which modulates sleep patterns following the diurnal cycles.
Source: Wikipedia "Pineal gland" · CC BY-SA 4.0
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