Muscles of facial expression

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Frontalis

Forms lines across the forehead

Orbicularis Oris

Forms the bulk of the body of the lips Sphincter Muscle Draws lips together into a pout Extends out to the modiolus No skeletal origin Allows insertion of other muscles

Mentalis

Lies over the mental protuberance Forms chin movements, e.g. ripples when crying

Zygomaticus Major

Produces a big, wide smile Originate from the zygomatic bone Insert into the orbicularis oris

Zygomaticus Minor

Produces a big, wide smile Originate from the zygomatic bone Insert into the orbicularis oris

Orbicularis Occuli

Sphincter muscle around the eye

Buccinator

Thin, flat, strong muscle Forms the bulk of the cheeks Wraps around the lower face, crossing over at the mouth Inserts into the pteygomandibular raphe


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