A Circadian Rhythm Is a Biological Fluctuation That Occurs Less

question 128

True/False

A circadian rhythm is a biological fluctuation that occurs less frequently than once a day.

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Definitions:

Gray Matter

The part of the brain that contains most of the brain's neuronal cell bodies and is involved in sensory perception, emotion, speech, decision making, and self-control.

White Matter

A component of the central nervous system consisting of glial cells and myelinated axons that facilitates communication between different brain regions.

Myelin

A fatty substance that surrounds and insulates the axons of some neurons, enhancing the speed at which nerve signals travel.

Cerebrospinal Fluid

A clear, colorless body fluid found in the brain and spinal cord, which acts as a cushion for the brain's cortex, providing basic mechanical and immunological protection.