HUMAN CIRCULATORY SYSTEM

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Across
  1. 5. artery that carries blood from heart to lungs
  2. 8. vein that brings oxygenated blood from lungs to heart
  3. 12. The upper chamber of the heart that receives blood
  4. 13. movement of blood through the body
  5. 15. circulation of blood from heart to all body parts
  6. 17. A blood vessel that carries blood away from the heart
  7. 18. cell that helps fight infection and disease
  8. 20. cell that transports oxygen using hemoglobin
Down
  1. 1. red pigment in blood that carries oxygen
  2. 2. The smallest blood vessel where exchange of gases occurs
  3. 3. liquid part of the blood
  4. 4. circulation of blood between heart and lungs
  5. 6. gas carried from the body cells to the lungs
  6. 7. blood cell that helps in blood clotting
  7. 9. A structure in the heart that prevents backflow of blood
  8. 10. The organ that pumps blood throughout the body
  9. 11. The largest artery in the human body
  10. 14. A blood vessel that carries blood back to the heart
  11. 16. The gas carried by red blood cells from lungs to body
  12. 19. The lower chamber of the heart that pumps blood out