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Brachium muscles

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Muscle
Origin
Insertion
Action
Pectoralis major   clavicle, sternum, cartilages of r's 1-6   intertubercular groove of humerus   flexes, adducts, and rotates humerus medially  
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Latissimus dorsi   SP's of lumbar and inferior thoracic vertebrae, iliac crest & R's 9-12   intertubercular groove of humerus   extends, adducts, & rotates humerus medially  
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Deltoid   clavicle, acromion process. spine of scapula   deltoid tuberosity of humerus   abducts, extends, and flexes humerus  
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Supraspinatus   supraspinous fossa of scapula   greater tubercle of humerus   abducts humerus  
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Infraspinatus   infraspinous fossa of scapula   greater tubercle of humerus   rotates humerus laterally  
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Teres major   inferior angle & lateral border of scapula   intertubercular groove of humerus   extends, adducts & rotates humerus medially  
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Teres minor   lateral border of scapula   gr. tubercle of humerus   rotates humerus laterally  
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subscapularis   subscapular fossa   lesser tubercle of humerus   rotates humerus medially  
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Coracobrachialis   coracoid process of scapula   medial shaft of the humerus   flexes and adducts humerus  
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Created by: Erinlei
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