Which statement best describes the central nervous system?

Which statement best describes the central nervous system?

• A. Nerves outside brain and spinal cord
• B. The sympathetic division of the autonomic NS
• C. Relays information between the brain and body via cranial nerves
• D. Brain and spinal cord

Answer: (D)

The central nervous system is the brain and spinal cord, where information is processed and responses are coordinated. It receives sensory signals, interprets them, and sends out commands to muscles and organs to produce appropriate actions. Nerves that lie outside this system belong to the peripheral nervous system. Cranial nerves, while they connect the brain to various parts of the body, are part of the peripheral nervous system rather than the central nervous system. So the best description is that the CNS consists of the brain and spinal cord.

The central nervous system is the brain and spinal cord, where information is processed and responses are coordinated. It receives sensory signals, interprets them, and sends out commands to muscles and organs to produce appropriate actions. Nerves that lie outside this system belong to the peripheral nervous system. Cranial nerves, while they connect the brain to various parts of the body, are part of the peripheral nervous system rather than the central nervous system. So the best description is that the CNS consists of the brain and spinal cord.