| Term | Definition |
|---|
| Paired muscles | originate from surface of the skull (bone) and insert on dermis of skin tissue |
| Orbicularis Oris | Function: Closes and compresses lips/ puckers/ purses lips, used to whistle or suck on a straw does not aid in smiling |
| Buccinator | Assists muscles of mastication ( Accessory muscle of mastication keeps food pushed back on occulsal surface for chewing |
| Mentalis | raises and wrinkles skin of chin and pushes up lower lip |
| Zygomatic Major | draws angel of mouth upward and backward; aids in smiling |
| Zygomatic Minor | Elevates upper lip assists in smiling |
| Risorius Mucsles | Widens the mouth; streches lip laterally which aids in smiling |
| Levator labii | Elevates raises the upper lip |
| Levator Labii Superioris Alaeque Nasi | Elevates upper lip and ala "sneering" expression (raise side of lip); dialates the nostrils |
| Levator Anguli Oris Muscle | Elevates the angle of the mouth; smile |
| Depressor Anguli Oris Muscle | Depresses lowers the lip causing it to pout |
| Platysma Muscle | Raises the skin of neck pulles the corner of the mouth down, grimaces |
| Epicrainial Muscle | Raises the eyebrows and scalp show surprise frown or squint |
| Obicularis Oculi Muscle | Closes the eyelid; Squint if all fibers are active get crow's feet |
| Corrugater Supercilii Muscle | draws the skin tissue of the eyebrow medially and inferiorly toward the noses (frowning) |
| 7th Cranial Nerve/Facial Nerve | Innervates the muscles of facial expression |
Combine with other sets
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