Examlex
Please define the following key terms. Show Who? What? Where? When? Why Important?
-Horace
Zeitgebers
External or environmental cues, such as light and temperature, that help regulate biological rhythms, including the sleep-wake cycle.
Melatonin
A hormone produced by the pineal gland that regulates sleep and wakefulness.
Secreted
Refers to the process by which substances are produced and discharged from cells or glands, often into the bloodstream or external environment.
Pineal Gland
A small endocrine gland in the brain that produces melatonin, a hormone that regulates sleep-wake cycles.
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