Body Systems Puzzle

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Across
  1. 6. waste gas exhaled from lungs
  2. 9. main organ of the integumentary system
  3. 10. comes out of pores and keeps body cool
  4. 11. type of digestion involving the teeth
  5. 12. tube from kidney to bladder
Down
  1. 1. main food tube from mouth to stomach
  2. 2. holds urine until the body gets rid of it
  3. 3. filters blood and produces urea
  4. 4. body system that gets nutrients from food
  5. 5. type digestion involving stomach acid
  6. 7. the body system that gets rid of waste
  7. 8. the 1st step of the digestive system
  8. 13. skin responds with the nervous system