Relier Pairs Muscle Actions Part One (D)Version en ligne muscles par Jennifer Jennings 1 latissimus dorsi 2 sternocleidomastoid 3 deltoid 4 triceps brachii 5 biceps brachii 6 rectus abdominis 7 pectoralis major 8 flexor carpi radialis and ulnaris 9 levator scapulae 10 trapezius ant. fibers flex and medially rotate arm, lat. fibers abduct the arm, post. fibers extend and laterally rotate the arm adducts and medially rotates humerus, extends the shoulder joint flexes, adducts, and medially rotates humerus elevates scapula if cervical vertebrae are fixed., flexes neck laterally when scapula is fixed. extends and laterally flexes the neck. flexes wrist anteriorly extends elbow rotates head left and right. bilaterally draws head forward and down. elbow flexion, forearm supination. flexes waist and compresses abdominal viscera
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