Transport in Animals

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Across
  1. 3. A natural form of red in your body
  2. 6. Also a substance carried by plasma
  3. 9. A substance carried by plasma
  4. 12. I can hear sounds
  5. 16. Carries oxygenated blood
  6. 17. A risk factor for coronary heart disease
  7. 18. A small road nearing the organs
  8. 19. I separate oxygenated and deoxygenated blood
  9. 20. _________ arteries supply blood to the heart
  10. 21. Also ensures one way flow of blood
  11. 22. Pathway for blood to flow through
Down
  1. 1. Instead of love, I can end up filling your heart
  2. 2. Blood clots are due to me
  3. 4. Electricity is what I need to see how you are
  4. 5. This is my shape as I don't have a nucleus
  5. 7. The higher this is, the higher the risk of coronary heart disease
  6. 8. Ensures one way flow of blood
  7. 10. Carries deoxygenated blood
  8. 11. The action of "eating" microorganisms
  9. 13. A special liquid which helps your blood cells move around
  10. 14. A small road back to the heart
  11. 15. Blood vessels become damaged due to this