Chapter 12 Review

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Across
  1. 5. the primary method of removing waste from the blood
  2. 7. sit between two chambers and open to let blood pass
  3. 8. only works if you have the right blood
  4. 9. blood vessel that allows gas exchange
  5. 10. primary organ in circulatory system
  6. 12. upper chambers of the heart
  7. 13. group of cells that send electric signals to the heart
  8. 15. blood vessel from body back to the heart
Down
  1. 1. liquid part of the blood, 55 percent
  2. 2. can be felt at the wrist or neck
  3. 3. these two organs filter blood and send waste to the bladder
  4. 4. sweating, removes a very small amount of waste from the blood
  5. 6. largest artery, garden hose diameter
  6. 7. lower chambers of the heart
  7. 11. allows blood to clot and stop bleeding
  8. 14. blood vessel from the heart to body