Across
- 4. in the right lung
- 6. the throat
- 8. small passages
- 9. windpipe
- 13. oxegyn
- 14. tiny air sacs
- 15. below the ribs
- 17. behind the nasal cavity
- 19. breathing in
Down
- 1. A network of tubes
- 2. two holes in your nose
- 3. cavity another word for nose
- 5. A pair of soft coned shape organs
- 7. small opening in the larynx
- 10. breathing out
- 11. two sets of heavy folds in the tissue
- 12. carbon dioxide
- 16. voice box
- 18. Above the mouth