Body systems crossword puzzle

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Across
  1. 1. leads away from the heart
  2. 5. all the organs that help you breath
  3. 6. connects the artery to the veins
  4. 8. leads to the heart
  5. 9. most well known part of the circulatory system
Down
  1. 2. leads blood around the body
  2. 3. stores urine
  3. 4. where blood has the water taken away from it and sorted out.
  4. 7. the most well known part of the respiratory system