human skeletal system

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Across
  1. 4. joint that helps bones slide
  2. 6. fluid in brain
  3. 7. helps skull move
  4. 8. limbs which help us walk
  5. 9. type of muscle
  6. 11. joint that allows movement in only one direction
  7. 12. protects brain
  8. 13. fluid in knee
  9. 15. cushion
  10. 17. part of your body that allows movement in only one direction helps bend legs
  11. 18. muscle in heart
Down
  1. 1. ball and socket joint
  2. 2. limbs which help us pick things up
  3. 3. joins two bones together
  4. 5. small bones of the backbone
  5. 10. muscles attached to bones
  6. 12. framework of our body
  7. 13. s shaped
  8. 14. longest and strongest bone
  9. 16. acid during cramps