Why do we move? -- What gives the body its shape? -- Skull and backbone -- Legs and arms -- Inside a bone -- Blood and bone -- Changing bones -- Connected bones -- More about joints -- Damage and repair -- Turning energy into action -- How do muscles work? -- Striped and smooth -- Ligaments and tendons -- Matching pairs -- Other muscle jobs -- Reflexes -- Balance and coordination -- Exercise -- Slowing down -- Caring for bones and muscles.
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