Muscular System: The Axial
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| Axial musculature | arises from and inserts onto the Axial Skelton. Positions head and vertebral column. Moves ribs- assists in breathing. 60% of skeletal muscle.
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| Appendicular musculature | Stablizes components of appendicular skeleton- moves components of it.
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| Muscles of head and neck | Groups of axial musculature muscles
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| Muscles of vertebral column | Groups of axial musculature muscles
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| Muscles of abdominal wall | Groups of axial musculature muscles
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| Muscles of pelvic floor | Groups of axial musculature muscles
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| Muscles of facial expression | orbicularis occuli, buccinator, orbicularis oris
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| Origin of Orbicularis occuli | Medial margin of orbit
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| Insertion Orbicularis occuli | Skin around eyelids
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| Action Orbicularis occuli | Closes eyes
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| Innervation Orbicularis occuli | Facial Nerve (N VII)
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| Origin Buccinator | Alveolar processes of maxilla and mandible
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| Insertion Buccinator | Blends into fibers of orbicularis oris
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| Action Buccinator | Compresses cheeks
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| Innervation Buccinator | Facial Nerve (N VII)
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| Origin Orbicularis Oris | Maxilla and Mandible
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| Insertion Orbicularis Oris | Lips
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| Action Orbicularis Oris | Compresses, purses lips
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| Innervation Orbicularis Oris | Facial Nerve (N VII)
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| Muscles of Mastication | Acts on mandible- Masseter muscle, temporalis muscle, pterygoid muscle
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| Mastication muscles that Open AND Close mouth | Pteryoid muscles. Lateral- OPENS. Medial- CLOSES.
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| Muscles of mastication that closes mouth | Temporalis Muscle & Masseter Muscle
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Created by:
afogel
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