★ Muscle Origin, Insertion, and Function Quiz
When you extend your arm to push the floor button on an elevator, the primer mover is the:
A. Triceps
B. Humerus
C. Biceps
D. Ulna
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This muscle is located on the upper chest and function in adduction and flexion of the arm/shoulder
A. latissimus dorsi
B. brachialis
C. deltoid
D. pectoralis major
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