Human body systems

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Across
  1. 2. the outside layer of your body
  2. 4. bone above the knee
  3. 5. protects the brain
  4. 8. part of the muscular system
  5. 10. bone of the forearm
  6. 12. part of the digestive system
  7. 13. part of the skeletal system
  8. 14. main part of the circulatory system
  9. 15. bone of the hand
Down
  1. 1. part of the digestive system
  2. 3. part of the circulatory system
  3. 6. removes the waste from the blood
  4. 7. The main part of the nerve system
  5. 9. they help you breath
  6. 11. secretes acid and enzymes