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Certified Ophthalmic Medical Technologist (COMT)

Category - COMT

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What is the primary function of the orbicularis oculi muscle?

Dilates the pupil
Constricts the pupil
Opens the eyelids.
Closes the eyelids

Explanation

Answer: D - The primary function of the orbicularis oculi muscle is to close the eyelids.

The orbicularis oculi muscle is innervated by cranial nerve VII. When this nerve is paralyzed, the eyelid is unable to close.

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