BRAIN
CRANIAL NERVES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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optic
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abducting
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vagus
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None of the above
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Detailed explanation-1: -The optic nerve is the second cranial nerve (CN II) responsible for transmitting visual information. The optic nerve contains only afferent (sensory) fibers, and like all cranial nerves is paired.
Detailed explanation-2: -Cranial nerves I, II, and VIII are considered purely afferent nerves since they conduct sensory information from the olfactory region, the retina of the eye, and the inner ear structures, respectively.
Detailed explanation-3: -Cranial Nerve II The examiner stands three feet away from the patient, and the patient focuses on the examiner’s eyes or nose. A pen or a finger is moved toward the center of the visual field in all four quadrants, and the patient will indicate when they can see the object.