Question

1. what are the two major parts of the nervous system?

brain and heart
lungs and spinal cord
central nervous system and peripheral nervous system
bones and muscles

Explanation:

To determine the two major parts of the nervous system, we analyze each option:

• "Brain and heart": The heart is part of the circulatory system, not the nervous system, so this is incorrect.
• "Lungs and spinal cord": Lungs are part of the respiratory system, so this is incorrect.
• "Central nervous system and peripheral nervous system": This is the correct division of the nervous system, with the central nervous system (brain and spinal cord) and the peripheral nervous system (nerves outside the CNS).
• "Bones and muscles": These are part of the musculoskeletal system, not the nervous system, so this is incorrect.

Answer:

C. Central nervous system and peripheral nervous system