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4 Cards in this Set
- Front
- Back
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Origin
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Manubrium, medial third of the clavicle
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Insertion
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Mastoid process
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Action
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Laterally flex the head, rotate the head, flex the neck. Assist to elevate the rib cage during inhalation
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Function
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It also acts as an accessory muscle of inspiration, along with the scalene muscles of the neck
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