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Orbicularis Oculi. Orbicularis means circular muscle and oculi means eye. This is a circular (sphincter) muscle that goes around the eye. Fibers anchor the frontal bone and maxillary bone and inserts into the eyelid so that when it contracts it closes the eye.he origin of this is the body of the mandible and the insertion is the skin/muscle of the lower lip. Note the triangularis/depressor anguli oris insertion is at the corner of the mouth while the depressor labii inferioris is more medial.
Image Source: lifescript.com. Orbicularis oculi is innervated by the facial nerve or CN VII. Damage to this nerve results to paralysis on one side of the face because the muscles of facial expression are affected. The patient will not be able to close his eyes and move the affected side.ars orbitalis or the orbital part of orbicularis oculi is the bulkiest among the three. Coarse fibers surround the entire orbit. It has two origins: the frontal bone and the maxilla. The insertion circles around the orbit.