34
QuizMultiple Choice

Human Impact on the Environment — Cumulative exam

Question 34 • SC332 Environmental Science B

Which describes the primary function of the nervous system in keeping the body in homeostasis?

Answer
A
It processes the environment and sends out signals.
B
It controls movement and provides structure.
C
It physically breaks down and absorbs food.
D
It puts oxygen in the blood, which is essential for life.

Explanation

The nervous system helps maintain homeostasis by detecting changes in the environment and sending signals that guide the body’s responses. For example, it can signal the body to sweat when it is too hot. “It processes the environment and sends out signals” describes this function; movement and structure, digestion, and oxygen exchange are primarily handled by other systems.

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