Flexion Of Muscles

Satisfactory Essays
It is important for a muscle to be attached to a fixed origin and a moving insertion because the immovable and movable bones attached on either side of the attached muscle, causing angular movements that change the angle of two bones. When the muscles contractacross the joints, they move towards the fixged origin by using the moving insertion. In order for the biceps to lift weights, they must use flexion and tension. Flexion describes the straightening of the muscle that increases the angle. Extension is when the joint moves in a posterior
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