The Respiratory System

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Across
  1. 2. air sacks
  2. 4. voice box
  3. 5. tubes from trachea to lungs
  4. 9. where cellular respiration takes place
  5. 11. Illness caused by smoking
  6. 12. fluid build up of air sacks
  7. 14. pause in breathing during sleep
  8. 15. disease of the lung
  9. 18. bones that divide the nasal cavity
  10. 19. inflammation of air passages
Down
  1. 1. Space at the back of the oral cavity
  2. 3. windpipe
  3. 6. Spasm of the diaphragm
  4. 7. opening vocal cords
  5. 8. These allow you to breathe
  6. 9. respiratory center of brain
  7. 10. Required for cellular respiration
  8. 13. divides left and right nostrils
  9. 16. prevents food entering the lungs
  10. 17. muscle used for breathing