The Breathing System

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Across
  1. 2. The biggest type of Blood Vessels.
  2. 3. The breathing out of air.
  3. 6. A part of the nose we breathe in.
  4. 12. A type of Protein structure used to keep tubes open.
  5. 13. The breathing in of air.
  6. 14. Gas Exchange occurs here.
  7. 16. The intermediate type of blood vessels,
  8. 17. Another word for Food tube.
  9. 18. This is the verb for the movement of gases.
  10. 19. Another word for breathing system.
  11. 21. Two tubes that branch off of the trachea.
  12. 23. Process where gases are swapped in the alveoli.
Down
  1. 1. a type of Breathing disorder.
  2. 4. A large muscle found at bottom of rib cage.
  3. 5. The type of gas we breathe out.
  4. 7. Thin tubes with no cartilage in them.
  5. 8. The Thin blood vessels found in the alveoli.
  6. 9. Food enters here.
  7. 10. The type of gas we breathe in.
  8. 11. A type of Breathing disorder.
  9. 15. The most abundant gas in the atmosphere.
  10. 20. Another word for your throat.
  11. 22. Another word for your voice box.