BRAIN
CRANIAL NERVES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Brain
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Brain Stem
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Spinal Cord
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Optic nerve
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Detailed explanation-1: -The central nervous system consists of the brain and the spinal cord. The peripheral nervous system (PNS) is the system involved in connecting the CNS to the rest of the body. The PNS does so via cranial nerves and ganglions present outside the CNS. All the cranial nerves except the optic nerve are part of the PNS.
Detailed explanation-2: -The retina, optic nerve, olfactory nerves, and olfactory epithelium are sometimes considered to be part of the CNS alongside the brain and spinal cord. This is because they connect directly with brain tissue without intermediate nerve fibers.
Detailed explanation-3: -Despite its peripheral location, the retina or neural portion of the eye, is actually part of the central nervous system.