What does the nervous system of vertebrates consist of?

What does the nervous system of vertebrates consist of?

• A. Central Nervous System and Peripheral Nervous System
• B. Brain and spinal cord
• C. Cranial nerves and ganglia
• D. Enteric nervous system

Answer: (A)

Vertebrate nervous system is organized into two major parts: the Central Nervous System and the Peripheral Nervous System. The Central Nervous System consists of the brain and spinal cord, where information is processed and integrated. The Peripheral Nervous System includes all nerves and ganglia outside the CNS, carrying signals to and from every part of the body. Together, these two components form the complete nervous system, which is why combining CNS and PNS is the best answer. The brain and spinal cord alone miss the nerves outside the CNS; cranial nerves and ganglia are components of the PNS rather than the whole system, and the enteric nervous system is a specialized network within the gut, not the entire nervous system.

Vertebrate nervous system is organized into two major parts: the Central Nervous System and the Peripheral Nervous System. The Central Nervous System consists of the brain and spinal cord, where information is processed and integrated. The Peripheral Nervous System includes all nerves and ganglia outside the CNS, carrying signals to and from every part of the body. Together, these two components form the complete nervous system, which is why combining CNS and PNS is the best answer. The brain and spinal cord alone miss the nerves outside the CNS; cranial nerves and ganglia are components of the PNS rather than the whole system, and the enteric nervous system is a specialized network within the gut, not the entire nervous system.