The skeletal system defines your body shape. It also influences the size of your hands and legs, their height and width. The muscles in the body are attached to the bones, so when they contract together, it causes the bones to move. In long bones, there is a spongy tissue that is responsible for red blood cells.
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The skeletal system defines your body shape. It also influences the size of your hands and legs, their height and width. The muscles in the body are attached to the bones, so when they contract together, it causes the bones to move. In long bones, there is a spongy tissue that is responsible for red blood cells.