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-The above map is an example of a
Suprachiasmatic Nucleus
A tiny region in the brain's hypothalamus responsible for controlling circadian rhythms.
Circadian Rhythms
Physical, mental, and behavioral changes that follow a 24-hour cycle, responding primarily to light and darkness in an organism's environment, affecting sleep patterns among other bodily functions.
Biological Clock
An internal mechanism that regulates bodily rhythms and cycles, such as sleep and wakefulness, on a roughly 24-hour cycle.
Pineal Gland
A small endocrine gland in the brain that produces the hormone melatonin, which regulates sleep and wakefulness.
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