Which of the following is NOT part of the peripheral nervous system?

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Multiple Choice

Which of the following is NOT part of the peripheral nervous system?

Explanation:
Understanding the organization of the nervous system helps here: the central nervous system consists of the brain and spinal cord, while the peripheral nervous system includes all nerves outside the CNS. The brain is located within the CNS, so it is not part of the peripheral nervous system. In contrast, cranial nerves emerge from the brain and are part of the PNS, spinal nerves connect the spinal cord to the body and are PNS, and peripheral nerves are the network of nerves outside the CNS. So the brain is the one that does not belong to the peripheral nervous system.

Understanding the organization of the nervous system helps here: the central nervous system consists of the brain and spinal cord, while the peripheral nervous system includes all nerves outside the CNS. The brain is located within the CNS, so it is not part of the peripheral nervous system. In contrast, cranial nerves emerge from the brain and are part of the PNS, spinal nerves connect the spinal cord to the body and are PNS, and peripheral nerves are the network of nerves outside the CNS. So the brain is the one that does not belong to the peripheral nervous system.

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