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Muscles that move the shoulder Name Origin Insertion Action Pectoralis major Sternum and costal cartilage. Interturbecular sulcus Adduction and flexion humerus Deltoid anterior clavicle Deltoid tuberosity Flexes humerus Deltoid middle acromion Deltoid tuberosity abducts humerus Spine of the scapula Deltoid tuberosity Deltoid posterior extends humerus Muscles that move the shoulder Name Origin Insertion Action Latissimus dorsi Spinous processes of T6-12, lumbar, sacral, illiac crest Interturbecular groove/sulcus Adduction and extension humerus Rotator cuff muscle (SITS) Name Origin Insertion Action Supraspinatus Supraspinous fossa Greater tubercle Abducts arm Infraspinatus Infraspinous fossa Greater tubercle Lat. rotates arm Teres minor Lat, border of the scapula Greater tubercle Lat. rotates arm Subscapularis Subscapular fossa Lesser tubercle Med. rotates arm Muscles that move the scapula Name Origin Insertion Action Trapezius, superior Ext. occipital prot., spinous process C7 lat. clavicle Elevates scapula Trapezius, middle Ligamentum nuchae, spinous processes upper thoracic Acromion adducts scapula Trapezius, inferior Lower thoracic spinous processes Spine of scapula depresses scapula Muscles that move the forearm Name Origin Insertion Action Bicep brachii, short head Coracoid process Radial tuberosity Flexes and supinates forearm Supraglenoid tubercle Radial tuberosity Flexes and supinates forearm Ant. Distal humerus Coronoid process Flexes forearm Bicep brachii, long head Brachialis Muscles that move the forearm Name Origin Insertion Action Triceps brachii, long and lateral head Infraglenoid tubercle; Sup. Post. humerus Olecranon process Extends forearm Ant. Distal ulna Ant. Dist. radius pronates forearm Lat. Epicondyle of humerus Post. Lat. Proximal radius supinates forearm Pronator quadratis Supinator 12 Muscles that move the hand and fingers Name Origin Insertion Action Palmaris longus Med. Epidoncdyle of the humerus Flexor retinaculum Flexes the hand Lat. Epidoncdyle of the humerus Dorsal surface of the phalanges (fingers) Extends fingers Extensor digitorum
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