front 1 Pectoralis Minor | back 1 Draws scapula forward and down |
front 2 Serratus Anterior | back 2
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front 3 Trapezius | back 3 Stabilizes, raises (shrug shoulder), retracts (adduct), rotates scapula. Also extend head and neck |
front 4 Levator Scapulae | back 4 Elevates/adducts the scapula |
front 5 Rhomboids (Major & Minor) | back 5 Retracts, adducts and depresses scapula (moves scapula back, together, and down) like downward motion of paddling a canoe “squaring shoulders” |
front 6 Pectoralis Major | back 6 Prime mover of arm flexion and adduction; rotates forearm medially; Can help in climbing, throwing, and pushing |
front 7 Latissimus Dorsi | back 7 Prime mover of arm extension and adduction; M edially rotates arm at shoulder. Bringing the arm down in a power stroke (striking a blow, hammering, swimming, and rowing) |
front 8 Deltoid | back 8 Prime mover of arm abduction when all fibers active Front fibers: arm flexion. Back fibers: arm extension. (arms during walking) |
front 9 List the Rotator Cuff Muscles | back 9 Supraspinitus Infraspinitus Teres Minor Subscapularis |
front 10 Rotator Cuff Muscles | back 10 Main function is to Reinforce the capsule of the shoulder joint to prevent dislocation of the humerus. Sports that involve a lot of shoulder rotation put these muscles under stress à pitching, bowling, swimming |
front 11 Teres Major | back 11 Extends, adducts, and medially rotates humerus synergist of latissimus dorsi |