Question

question 78
what is true of the orbicularis oculi muscle?
it closes the eye and is supplied by the facial nerve
it opens the eye and is supplied by the facial nerve
it closes the eyes and is supplied by the oculomotor nerve
it opens the eye and is supplied by the oculomotor nerve

Explanation:

The orbicularis oculi muscle is responsible for closing the eye. The facial nerve (cranial nerve VII) innervates the muscles of facial expression, including the orbicularis oculi. The oculomotor nerve (cranial nerve III) is mainly involved in eye - movement (such as innervating the levator palpebrae superioris which helps in opening the eyelid, but the primary muscle for eye - opening is not the focus here).

Answer:

It closes the eye and is supplied by the facial nerve