Front | Back |
Occipitolfrontalis |
Origin: F: Epicranial Aponeurosis O: Occipital bone and mastoid processInsertion: F: Skin above eyebrows O: Epicranial Aponeurosis Action: F: Raises eyebrows O: Draws scalp posteriorly
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Orbicularis Oris |
Origin: Fibers surrounding the mouthInsertion: Skin @ corner of mouth Action: closes or Protrudes lips - duck face
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Zigomaticus Minor Zigomaticus Major |
Origin: BOTH- Zygomatic BoneInsertion: Minor - upper lip Major - Skin @ angle of mouth and Orbicularis orisAction: Minor - Raises upper lip to show teeth Major - (Smiling) Brings mouth up and sideways
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Buccinator |
Origin: Alveolar process and ptyerygomandibular raphInsertion: Orbicularis OrisAction: Compresses cheek
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Risorius |
Origin: Fascia over Parotid gland Insertion: skin @ agle of mouth Action: Draws angle of mouth laterally (grimace)
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Mentalis |
Origin: Mandible Insertion: Skin of chinAction: brings lower lip up and out, also pulls skin chin up (pouting)
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Orbicularis Oculi |
Origin: Medial wall of orbitInsertion: Circular path around orbitAction: Closes eye
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Masseter |
Origin: Maxilla and Zygomatic archInsertion: angle of ramus on mandibleAction: closes mouth (jaw)
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Temporalis |
Origin: Temporal boneInsertion: coronoid process and ramus on mandibleAction: closes mouth
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Sternocleidomastoid |
Origin: Sternal headInsertion: Mastoid process of temporal bone and lateral half of superior nuchal line of occipital boneAction: Flex's head, extends head
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