NEUROLOGY
OCULAR PALSIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Lateral rectus muscle receives innervation from the following cranial nerve:
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VI
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V
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III
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VII
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Explanation:
Detailed explanation-1: -The abducens nerve (cranial nerve VI) exits the brainstem from the pons-medullary junction and innervates the lateral rectus muscle.
Detailed explanation-2: -Abducens Nerve (CN VI): This nerve only innervates one muscle of the eye, the lateral rectus muscle.
Detailed explanation-3: -The lateral rectus is the only muscle supplied by cranial nerve VI, the abducens nerve, via the tectospinal tract.
Detailed explanation-4: -The third, fourth, and sixth cranial nerves participate in eyeball movement by extraocular muscle control. Acquired palsy of these nerves can result from various causes such as trauma, vascular disease, intracranial tumours, or aneurysm, and so on.
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