Ptosis is due to damage of _____________?
Correct answer: A. Occulomotor nerve
- A. Occulomotor nerve
- B. Abducens nerve
- C. Trochlear nerve
- D. Facial nerve
Explanation
The oculomotor nerve supplies levator palpebrae superioris, which elevates the upper eyelid, so its palsy produces ptosis. Trochlear and abducens palsies cause characteristic diplopia, not primary ptosis.
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