The Heart

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Across
  1. 5. The fluid that leaks out of blood vessels and surrounds cells
  2. 7. The iron-containing molecule in red blood cells
  3. 9. The component of blood responsible for clotting
  4. 10. The main artery that leaves the heart
  5. 11. The largest vein in the body
  6. 12. The smallest type of blood vessels where oxygen exchange occurs
  7. 14. The small structures that help filter lymph
  8. 15. Blood vessels that carry oxygen-rich blood away from the heart
  9. 18. The blood vessels that carry blood back to the heart
  10. 19. A disease where plaque builds up in arteries
Down
  1. 1. The lower chambers of the heart
  2. 2. A type of white blood cell that fights infection
  3. 3. The blood type that is the universal donor
  4. 4. A condition caused by a blocked coronary artery
  5. 6. The process of blood cell formation
  6. 8. The upper chambers of the heart
  7. 9. The liquid part of blood that carries cells and nutrients
  8. 13. A condition where blood pressure is too high
  9. 16. The main organ of the circulatory system
  10. 17. A protein that helps blood clot