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3 Cards in this Set
- Front
- Back
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Origin
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Medial half of clavicle, sternum, and cartilage of first through sixth ribs
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Insertion
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Crest of greater tubercle of humerus
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Action
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Adduct the shoulder, medially rotate the shoulder, assist to elevate the thorax during inhalation
Upper fibers- Flex the shoulder, horizontally adduct the shoulder Lower fibers- Extend the shoulder |
