The Brain and Its Surrounding Structures Fill the ________ Cavity

question 57

Short Answer

The brain and its surrounding structures fill the ________ cavity.

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Definitions:

Melatonin

A hormone produced by the pineal gland that regulates sleep and wakefulness.

Pineal Gland

A small endocrine gland in the brain that produces melatonin, a hormone that regulates sleep-wake cycles.

Biological Clock

An internal mechanism that controls the timing of biological functions and behaviors, such as sleep, metabolism, and reproduction.

REM Sleep

A phase of sleep characterized by rapid eye movements, more dreaming, and bodily movement; considered important for emotional and cognitive restoration.