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Coracobrachialis
O- coracoid process of scapula
I- medial midshaft of humerus
A- flexes arm at shoulder, adducts arm
Pectoralis Major
O- clavicle, sternum and costal cartilages of upper ribs
I- intertubercular sulcus of humerus
A- flexes arm at shoulder, adducts and medially rotates arm
Teres Major
O- lateral border of scapula
A- extends arm at shoulder, adducts and medially rotates arm
Latissimus Dorsi
O- spinous processes of lower thoracic and lumbar vertebrae, iliac crest and lower ribs
A- extends arm at shoulder, adducts and medically rotates arm
Supraspinatus
O- supraspinous fossa of scapula
I- greater tubercle of humerus
A- adducts arm
Deltoid
O- acromion process, spine of scapula and clavicle
I- deltoid tuberosity of humerus
A- lateral portions adducts arm
*anterior portion flexes arm @ shoulders
*posterior portion extends arm @ shoulders
Subscapularis
O- anterior surfaces of scapula
I- lesser tubercle of humerus
A- medically rotates arm
Infraspinatus
O- infraspinous fossa of scapula
A- laterally rotates arm
Teres minor
O- lateral bored of scapula
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