Which term describes the central nervous system's major components?

Which term describes the central nervous system's major components?

• A. Brain and Spinal Cord
• B. Nerves
• C. Ganglia
• D. Enteric System

Answer: (A)

The CNS consists of the brain and spinal cord, forming the body's command center and main information highway. The brain processes sensory input, thoughts, and memories, while the spinal cord transmits signals between the brain and the rest of the body and coordinates many reflexes. The other structures belong to the peripheral nervous system: nerves are bundles of axons carrying signals to and from the CNS; ganglia are clusters of neuron cell bodies usually found outside the CNS; and the enteric system is a neural network within the digestive tract. Therefore, brain and spinal cord are the major components of the central nervous system.

The CNS consists of the brain and spinal cord, forming the body's command center and main information highway. The brain processes sensory input, thoughts, and memories, while the spinal cord transmits signals between the brain and the rest of the body and coordinates many reflexes. The other structures belong to the peripheral nervous system: nerves are bundles of axons carrying signals to and from the CNS; ganglia are clusters of neuron cell bodies usually found outside the CNS; and the enteric system is a neural network within the digestive tract. Therefore, brain and spinal cord are the major components of the central nervous system.