Located in the brain and spinal cord; its components are the body's mainframe computer where all communication and control originate?

• A. Peripheral nervous system
• B. Central nervous system
• C. Autonomic nervous system
• D. Somatic nervous system

Answer: (B)

The central nervous system is located in the brain and spinal cord, and it functions as the body’s command center. It processes sensory information, makes decisions, and issues motor commands that coordinate every action. That means all communication and control originate there, which is exactly what the description is conveying. The peripheral nervous system, by contrast, includes nerves outside the CNS that carry messages to and from it. Within the PNS, the autonomic division handles involuntary functions, while the somatic division deals with voluntary control of skeletal muscles. So the description aligns with the central nervous system as the main origin of communication and control.