The Substantia Nigra Is

question 112

Multiple Choice

The substantia nigra is:

• A)located in the midbrain.
• B)the brain location that has shown the greatest degree of neurogenesis in studies with rats and primates.
• C)the primary communication link between the two hemispheres of the cerebral cortex.
• D)the point at which motor signals cross over from one side of the brain to the opposite side of the body.

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Definitions:

Androgens

A group of hormones that play a role in male traits and reproductive activity; includes testosterone.

Testes

The male reproductive glands that produce sperm and hormones, including testosterone.

Circadian Rhythms

Biological processes that follow a roughly 24-hour cycle, influencing physiological and behavioral changes in living organisms.

Puberty

The period of life at which one becomes functionally capable of reproduction.