ANATOMY

Detailed explanation-1: -The orbicularis oculi muscle closes the eyelids and assists in pumping the tears from the eye into the nasolacrimal duct system. The orbital section of the orbicularis oculi is more involved in the voluntary closure of the eyelid, such as with winking and forced squeezing.

Detailed explanation-2: -Overview. The orbicularis oculi muscles circle the eyes and are located just under the skin. Parts of this muscle act to open and close the eyelids and are important muscles in facial expression.

Detailed explanation-3: -Orbicularis Action The orbicularis oculi muscle is innervated by cranial nerve VII (the facial nerve). Contraction of the palpebral portion closes the eyelid gently, and the palpebral orbicularis is the muscle of action in an involuntary blink and a voluntary wink; relaxation of the levator muscle follows.

Detailed explanation-4: -Orbicularis oculi is a paired facial muscle that surrounds each orbit and the adjacent periorbital region. Together with corrugator supercilii and levator palpebrae superioris, it belongs to the circumorbital and palpebral group of muscles that surround the eye.

Detailed explanation-5: -The main action caused by the orbicularis oris muscle is the pursing or puckering of the lips. These actions of the lips allow you to kiss someone, play a wind instrument, and whistle your favorite song.