Across
- 5. chest
- 6. to breathe
- 7. diaphragm
- 8. chest
- 9. alveolus,air sac
- 11. bronchus
- 12. larynx
- 13. epiglottis
- 16. breathing
- 17. nose
- 19. lobe
Down
- 1. lung,air
- 2. pleura,rib,side
- 3. windpipe
- 4. bronchiole
- 8. lung
- 10. air
- 14. throat
- 15. chest
- 18. nose