All the following are true about upper eyelid EXCEPT______________?
Correct answer: B. Muscles which open the eyelid are supplied by the branch of trigeminal nerve
- A. Muscles which close the eyelid are supplied by the facial nerve
- B. Muscles which open the eyelid are supplied by the branch of trigeminal nerve
- C. Sensory supply is by the 5th cranial nerve
- D. Blood supply is by the lacrimal and ophthalmic arteries
Explanation
The upper eyelid is opened mainly by levator palpebrae superioris through cranial nerve III, with sympathetic supply to the superior tarsal muscle, not by the trigeminal nerve. Facial nerve supplies orbicularis oculi, which closes the eyelid.
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