What nerve innervates the orbicularis oris?

Results. The buccal branch of the facial nerve innervated the upper orbicularis oris muscle.

What is an Oris in anatomy?

Introduction. Orbicularis oris muscle, also known as musculus orbicularis oris is a complex, multi-layered muscle which attaches through a thin, superficial musculoaponeurotic system to the dermis of the upper lip and lower lip and serves as an attachment site for many other facial muscles around the oral region.

What movement does the orbicularis oris control?

Just like the other muscles of the buccolabial group, the function of orbicularis oris is to control the shape and movements of the lips. It closes, protrudes and compresses the lips.

What’s the meaning of Oris?

topographic name from Old French horis, a hill name. from a Germanic personal name composed of the elements ald ‘old’ + ric ‘power’, ‘rule’.

What action does the orbicularis oris perform?

What does the orbicular oris muscle do?

Orbicularis oris . Located in the face, the orbicularis oris muscle controls movements of the mouth and lips. Specifically, it encircles the mouth, originating in the maxilla (upper jaw and palate) and mandible (lower jaw) bones. The muscle inserts directly into the lips.

What does the orbicularis oculi muscle do?

Orbicularis Oculi functions. The main function of the orbicularis oculi muscle is to close the eyelids, and it is, in fact, the only muscle that can do so. More specifically, it is so critical that if there is any sort of injury/damage to this muscle, the subject loses the ability to close their eyes.

What is the antagonist of the orbicularis oris?

The frontalis muscle, which runs from the upper forehead, halfway between the coronal suture (which traverses the top of the skull) and the top edge of the orbit, attaches to the eyebrow skin. Since it pulls the eyebrows upward, it is the antagonist of the orbicularis oculi.