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origin - angle of ribs 1-9insertion - medial border of scapulainnervation - long thoracic nerveblood supply - lateral thoracic artery and thoracodorsal arteryaction - allows for rotation of scapular to allow for abduction past 90 degrees, accessory muscle of respiration

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1.
origin - angle of ribs 1-9

insertion - medial border of scapula

innervation - long thoracic nerve

blood supply - lateral thoracic artery and thoracodorsal artery

action - allows for rotation of scapular to allow for abduction past 90 degrees, accessory muscle of respiration





 
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