Final answer:
The peripheral nervous system is not composed of the brain and spinal cord; it consists of all nerves outside these structures.
Explanation:
The peripheral nervous system is not made up of the brain and spinal cord. The peripheral nervous system (PNS) consists of all nerves outside the brain and spinal cord, including cranial nerves and spinal nerves. On the other hand, the central nervous system (CNS) comprises the brain and spinal cord.
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