BRAIN
CRANIAL NERVES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What nerve supplies motor fibers for one external eye muscle?
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Vestibulocochlear
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Trochlear
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Glossopharyngeal
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Facial
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Explanation:
Detailed explanation-1: -The trochlear nerve (4th cranial nerve) controls: Superior oblique muscle-rotates the eyeball forward when the eye is adducted.
Detailed explanation-2: -The trochlear nerve is the fourth cranial nerve (CN IV) and one of the ocular motor nerves that controls eye movement. The trochlear nerve, while the smallest of the cranial nerves, has the longest intracranial course as it is the only nerve to have a dorsal exit from the brainstem.
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