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Chapter11MusclesPart1Marieb - Ch 11 Muscles of the Body...

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Ch 11, Muscles of the Body Part 1: The Axial Musculature Consists of the Head and Neck Spine Ribs Know the Terms: Origin, Insertion, Action Agonist (prime mover) and Antagonist Synergist Developed by John Gallagher, MS, DVM
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Muscle Arrangements
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Some Nomenclature Aids Location, e.g., intercostal Shape, e.g. deltoid Size, e.g., gluteus maximus Direction of fibers, e.g., rectus, oblique Location of origin and/or insertion, e.g., sternocleidomastoid Number of origins, e.g., biceps brachii Action (flexor, extensor, etc.) Page 274 Superficial, big, important
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Superficial muscles Fig 11-7 a and b
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The Head (and face) orbicularis oculi orbicularis oris risorius platysma
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Muscles of Mastication (chewing) Masseter Temporalis Buccinator
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Tongue (glosso) and related muscles Genioglossus Inferior aspect of tongue Styloglossus Hyoglossus Genio- = chin Glosso = tongue
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Eye (Ch 16) Rectus muscles: Medial and Lateral Superior and Inferior Oblique muscles
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