Pineal Gland
Definition
A small, pea-shaped gland in the brain. Its function isn't fully understood. Researchers do know that it produces and regulates some hormones, including melatonin.
Analogy
The pineal gland is like a night watchman who turns on the lights (produces melatonin) when it gets dark to help you sleep.
Related terms
Melatonin: A hormone produced by the pineal gland at night or in response to darkness. It plays a crucial role in sleep and circadian rhythms.
Serotonin: A neurotransmitter that has a wide variety of functions in the body. It's sometimes called the feel-good neurotransmitter because it contributes to wellbeing and happiness.
Circadian Rhythms: Physical, mental, and behavioral changes that follow a daily cycle. They respond primarily to light and darkness in an organism's environment.
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