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Head/face/neck
BIOL131
Muscle | Origin and Insertion | Action |
---|---|---|
Masseter | (O) Zygomatic arch (I) Angle and ramus of mandible | Elevates Mandible |
Obicularis Occuli | (O) Frontal and maxillary bones and ligaments around orbit (I) Tissue of eyelid | Closes eyelid |
Obicularis Oris | (O) Muscles surrounding mouth (I) Skin surrounding mouth | Closes and protrudes lip |
Sternocleidomsatoid | (O) Manubrium; medial portion of clavical (I) Mastoid process | Flexes and rotates head |
Temporalis | (O) Temporal fossa (I) Coronoid process and ramus of mandible | Elevates and retracts mandible |
Zygomaticus (Major and Minor) | (O) Inferior border of zygomatic (I) Skin and muscle at angle of mouth | Raises angle of mouth |
Depressor Labii | (O) Body of mandible lateral to its midline (I) Skin and muscle of lower lip | Depresses lower lip |