BRAIN
CRANIAL NERVES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Facial (CN VII)
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Oculomotor (CN III), Trochlear (CN IV), Abducens (CN VI)
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Optic (CN II)
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Olfactory (CN I)
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Detailed explanation-1: -For the 2nd (optic) cranial nerve, visual acuity is tested using a Snellen chart for distance vision or a handheld chart for near vision; each eye is assessed individually, with the other eye covered.
Detailed explanation-2: -Accompanied by the ophthalmic artery, the optic nerve enters the bony skull through the optic foramen and travels within the optic canal to reach the middle cranial fossa. Located in the middle cranial fossa is the optic chiasm. The optic nerves of both eyes meet at the optic chiasm and form the optic tracts.
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.