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