Respiratory System and Your Blood

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Across
  1. 5. Colourless liquid part of the blood
  2. 8. Thread-like structure that helps to clot blood
  3. 10. Structure taking air to and away from the lungs
  4. 11. Gas used by your body cells.
  5. 13. A disease that affects the lungs
  6. 14. The system that supplies your body with air.
  7. 15. Blood vessel with valves
  8. 17. Protects and defends the body
  9. 19. Where blood cells are made
Down
  1. 1. Waste gas produced during respiration.
  2. 2. Place of gas exchange in the lungs
  3. 3. Clots the blood
  4. 4. Blood vessel with thick walls
  5. 6. Another name for the circulatory system.
  6. 7. Blood cell without a nucleus
  7. 9. Blood vessel with very thin walls
  8. 12. White blood cell the 'eats' bacteria
  9. 16. Process by which air enters and leaves lungs
  10. 18. Mineral in our teeth that helps to clot blood