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-the muscles which bring about these movements are called biceps and triceps
-biceps are attached to scapula and radius for bending
-triceps are attached to scapula, humerus and ulna for stretching
-when the biceps contracts, it pulls the radius (forearm) and the hand bends
-the triceps relaxes at the same time
-when the triceps contracts and biceps relaxes(extends) the arm is stretched
-biceps flexes the arm (flexor) and triceps extend(extensor muscle) the arm
Githiari answered the question on November 8, 2017 at 05:49
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