BRAIN
CRANIAL NERVES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Olfactory (I)
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Optic sensory (II)
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Oculomotor (III, IV, VI)
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Trigeminal (V)
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Detailed explanation-1: -The optic nerve is a CNS structure arising from the diencephalon. As a CNS structure, the optic nerve is myelinated by oligodendrocytes and is ensheathed in the three meningeal layers.
Detailed explanation-2: -The optic nerve is a bundle of more than 1 million nerve fibers. Also known as the second cranial nerve or cranial nerve II (CNII), it is the second of several pairs of cranial nerves. It transmits sensory information for vision in the form of electrical impulses from the eye to the brain.
Detailed explanation-3: -There are no effective treatments to regenerate nerve cells or to restore connections between the eye and brain once the optic nerve is lost. This is a major barrier in the field and one that must be overcome, given the substantial number of patients suffering from optic neuropathy-associated blindness.