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Muscle: Platysma
Origin: Fascia over deltoid and pectoralis major muscles
Insertion: Mandible
Action: Draws outer part of lower lip down and depresses mandible
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Muscle: Mentalis
Origin: Mandible
Insertion: Underneath skin of chin
Action: Elevates and protrudes lower lip and pulls skin of chin up; as in pouting
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Muscle: Orbicularis oris
Origin: Muscle fibers encircling the opening of the mouth
Insertion: Slom at corner of the mouth
Action: Closes and brings the lips together; as in kissing
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Muscle: Corrugator supercili
Origin: Medial end of superciliary arch of frontal lobe
Insertion: Skin of eyebrow
Action: Moves eyebrows downwards
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Muscle: Orbicularis oculi
Origin: Medial wall of orbit
Insertion: Circular path around orbit
Action: Closes eye
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Muscle: Occipofrontalis
Origin: Epicranial Aponeurosis
Insertion: Skin superior to supraorbital margin
Action: Makes horizontal lines on the forehead; wrinkles skin