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