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