Explain the movement of the bones using the movement of our arm.
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The movements of bones in the human arm are caused by the contraction and relaxation of muscles. One end of a muscle is attached to a movable bone, whereas the other end is attached to a fixed bone. When the muscle contracts, it pulls the movable bone. Muscles work in pairs.
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Answer: The movements of bones in the human arm are caused by the contraction and relaxation of muscles. One end of a muscle is attached to a movable bone, whereas the other end is attached to a fixed bone. When the muscle contracts, it pulls the movable bone. Muscles work in pairs
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