The skeletal system

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Across
  1. 4. attaches muscle to bone
  2. 5. lubricates a joint
  3. 7. cells that clear away bone
  4. 8. attaches bone to bone
  5. 9. exercise which helps prevent osteoporosis
  6. 10. examples: calcium and phosphorus
Down
  1. 1. cells that build new bone
  2. 2. physical activity
  3. 3. prevents bones grinding together
  4. 6. occurs to tendons and ligaments