The peripheral nervous system is made up of?

The peripheral nervous system is made up of?

• A. 12 pairs of cranial nerves, 31 pairs of spinal nerves
• B. Brain and spinal cord
• C. Nerves and ganglia within CNS
• D. Only cranial nerves

Answer: (A)

The peripheral nervous system consists of all nerves and their associated ganglia outside the brain and spinal cord, connecting the CNS to the rest of the body. In humans, this includes the twelve pairs of cranial nerves that originate from the brain and the thirty-one pairs of spinal nerves that emerge from the spinal cord. This is why describing the PNS as having 12 cranial nerve pairs and 31 spinal nerve pairs is the best answer—it captures the components outside the CNS that relay information to and from muscles, skin, and organs. The other options point to the brain and spinal cord (the CNS), to nerves and ganglia located within the CNS, or to only cranial nerves, which omits significant portions of the peripheral network.

The peripheral nervous system consists of all nerves and their associated ganglia outside the brain and spinal cord, connecting the CNS to the rest of the body. In humans, this includes the twelve pairs of cranial nerves that originate from the brain and the thirty-one pairs of spinal nerves that emerge from the spinal cord. This is why describing the PNS as having 12 cranial nerve pairs and 31 spinal nerve pairs is the best answer—it captures the components outside the CNS that relay information to and from muscles, skin, and organs. The other options point to the brain and spinal cord (the CNS), to nerves and ganglia located within the CNS, or to only cranial nerves, which omits significant portions of the peripheral network.