Question

which describes the primary function of the nervous system in keeping the body in homeostasis? 1 point it processes the environment and sends out signals. it controls movement and provides structure. it physically breaks down and absorbs food. it puts oxygen in the blood, which is essential for life.

Explanation:

• Analyze each option:
• Option 1: The nervous system processes environmental information (sensory input) and sends out signals (motor output) to maintain homeostasis. This matches its function.
• Option 2: Controlling movement is part of the nervous system, but providing structure is the role of the skeletal system, so this is incorrect.
• Option 3: Physically breaking down and absorbing food is the function of the digestive system, not the nervous system.
• Option 4: Putting oxygen in the blood is the function of the respiratory system, not the nervous system.

Answer:

A. It processes the environment and sends out signals.