Final answer:
The superchiasmatic nucleus is located in the hypothalamus and regulates the body's circadian rhythm.
Step-by-step explanation:
The superchiasmatic nucleus can be found in the hypothalamus. It is a small area of the brain that is responsible for regulating the body's circadian rhythm, or internal clock. This structure helps to control the sleep-wake cycle and coordinate various physiological processes based on the time of day.
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