The _____ nervous system is composed of the brain and the spinal cord.

• A. central
• B. peripheral
• C. autonomic
• D. somatic

Answer: (A)

Verified step by step guidance

1. Understand the components of the nervous system: The nervous system is divided into two main parts: the central nervous system (CNS) and the peripheral nervous system (PNS).
2. Define the central nervous system (CNS): The CNS is composed of the brain and the spinal cord. It is responsible for processing and sending out information to the rest of the body.
3. Define the peripheral nervous system (PNS): The PNS consists of all the nerves that branch out from the brain and spinal cord and extend to other parts of the body including muscles and organs.
4. Differentiate between the autonomic and somatic nervous systems: The autonomic nervous system controls involuntary body functions like heartbeat and digestion, while the somatic nervous system controls voluntary movements.
5. Identify the correct answer: Based on the definitions, the nervous system composed of the brain and the spinal cord is the central nervous system.