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A&P1 Muscles 1 of 11
Facial Expression
Muscle | Origin | Insertion | Action |
---|---|---|---|
Zygomaticus | Zygomatic bone | Orbicularis Oris | Raises corner of mouth; smiling |
Platysma | Facia in upper chest | Lower border of mandible | Draws angle of mouth downward; pouting |
Orbicularis oculi | Maxillary and frontal bones | Skin around eye | closes eye as in blinking |
Orbicularis oris | Muscles near mouth | Skin of central lip | Closes lips, protrudes lips as for kissing |