Skeletal and Muscular system

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Across
  1. 2. longest bone in the body
  2. 3. Organ system that helps movement
  3. 7. muscle in the upper arm
Down
  1. 1. Muscle at the back of the upper arm
  2. 4. Bone protecting the brain
  3. 5. joints that moves like a door
  4. 6. connect muscle to bone