Circulatory System

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Across
  1. 4. carries blood from the lungs to the left atrium
  2. 5. structers that open and close to control blood flowhrough the heart
  3. 7. brings oxygen-poor blood from your upper body to your heart
  4. 11. a cell that fights off infections
  5. 13. a cell that carries oxygen throughout the body
  6. 14. a small blood cell that helps the blood to clot
  7. 15. a blood vessel that carries blood away from the heart
Down
  1. 1. either of the two lower chambers of the heart that pumps blood through the arteries
  2. 2. the artery that carries blood from the right venticle to the lungs
  3. 3. the body's system
  4. 6. two upper chambers in the heart that receive blood.
  5. 8. a blood vessel that carries blood to the heart
  6. 9. is a tiny blood vessel that connects arteries to veins
  7. 10. a muscular organ that pumps blood throughout the body
  8. 12. a tube which blood flows