Term
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Definition
| Origin: Lowe Border Mandible Insertion: Skin of Chin Function: Protrude Lower Lip, Wrinkle chin skin Nerve: 7 Facial Nerve |
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Term
| Depressor Labii Inferioris |
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Definition
| Origin: Mandible Insertion: Lower Lip, Orbicularis Oris Function: Depresses Lower Lip Nerve:7 Facial Nerve |
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Term
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Definition
| Origin: Lower border of Mandible, continuous with platysma muscle Insertion: Angle of he mouth Orbicularis Oris Function: Depresses Angle of Mouth Nerve: 7 Facial Nerve |
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Term
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Definition
| Orgin: Fascia over masseter muscle Insertion: Angle of mouth, Orbicularis Oris Function: pull angle of mouth lateral Nerve: 7 Facial Nerve |
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Term
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Definition
| Origin: Alveolar process of maxilla and mandible Insertion: Angle of mouth, Orbicularis oris Function: Compresses Cheeks Nerve: 7 Facial Nerve |
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Term
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Definition
| Origin: zygomatic bone, Anterior surface Insertion: Upper Lip, Orbicularis Oris Function: draws mouth up and back Nerve: 7 Facial Nerve |
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Term
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Definition
| Origin: Maxillary Bone, Anterior surface Insertion: Angle of mouth, Orbicularis oris Function: Elevates angle of mouth Nerve: 7 Facial Nerve |
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Term
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Definition
| 3 Heads, can be treated as separate muscles 1. zygomatic muscle 2.Infraorbital head 3. Angular Head |
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Term
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Definition
| Origin: Anterior surface zygomatic bone Insertion: upper lip Function: draws lip up and back (smile) Nerve: 4 Facial Nerve |
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Term
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Definition
| Origin: Infraorbital surface maxillary bone Insertion: upper Lip Function: raises upper Lip Nerve: 7 Facial Nerve |
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Term
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Definition
| Origin: Frontal Process of maxillary bone Insertion: allar cartilage of nostril, upper lip, orbicularis oris Function: flares nostrils, raises upper lip Nerve: 7, Facial Nereve |
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Term
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Definition
| Origin and Insertion: Circular of "sphincter" muscle, no real origin or insertion Function: Closes lips, protrudes lips Nerve: 7, Facial Nerve Acts as antagonist muscle for other facial muscles |
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