Term
| Epicranius/occipitofrontalis (frontal and occipital bellies) |
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Definition
| Action: Raises eyebrows, pulls scalp posteriorly Origin: Occipital and temporal bones Insertion: Skin of eyebrows |
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Term
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Definition
| Action: Close eye lids; Origin: Frontal and maxillary bones; Insertion: Skin of eyelid |
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Term
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Definition
| Action: Draws corner of lip laterally ; Origin: Fascia of masseter; Insertion: Skin at angle of mouth |
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Term
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Definition
| Action: Close lips; Origin: Maxilla and mandible; Insertion: Skin of mouth |
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Term
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Definition
| Action: Elevates corners of mouth; Origin: Zygomatic bone; Insertion: Skin and muscle at corners of mouth |
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Term
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Definition
| Action: Draws corner of lips laterally; Origin: Molar region of mandible and maxillae; Insertion: Orbicularis oris |
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Term
| Depressor Labii Inferioris |
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Definition
| Action: Draws lower lip inferiorly; Origin: Body of mandible; Insertion: Skin and muscle of lower lip |
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Term
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Definition
| Action: Raises upper lip; Origin: Zygomatic bone and maxilla; Insertion: Skin and muscle of upper lip |
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Term
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Definition
| Action: Draws corners of mouth down and lateral; Origin: Mandible; Insertion: Skin and muscle at angle of mouth |
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Term
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Definition
| Action: Protrudes lower lip; Origin: Anterior mandible; Insertion: Skin of chin |
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Term
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Definition
| Action: Elevate mandible; Origin: Zygomatic arch and maxilla; Insertion: Angle and ramus of mandible |
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Term
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Definition
| Action: Elevate and retract mandible; Origin: Temporal fossa; Insertion: Coronoid process of mandible |
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Term
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Definition
| Action: Depress mandible; Origin: Fascia of chest; Insertion: Mandible |
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Term
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Definition
| Action: Flex neck and rotate head; Origin: Manubrium of sternum and clavicle; Insertion: Mastoid process of temporal bone |
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Term
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Definition
| Action: Flex and rotate neck, elevate ribs; Origin: Transverse process of cervical vertebrae; Insertion: Ribs 1 and 2 |
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Term
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Definition
| Action: Elevate hyoid, open mouth, depress mandible; Origin: Lower mandible and mastoid process; Insertion: Hyoid bone |
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Term
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Definition
| Action: Elevates and retracts hyoid; Origin: Styloid process of temporal bone; Insertion: Hyoid |
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Term
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Definition
| Action: Elevates hyoid bone during swallowing; Origin: Medial mandible; Insertion: Hyoid bone |
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Term
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Definition
| Action: Depresses larynx; Origin: Manubrium and clavicle; Insertion: Hyoid bone |
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