Across
- 2. tubes connecting trachea to the lungs
- 4. large muscle that controls the lungs
- 10. where air enters your body
- 11. place where air enters your body
- 12. grape-like bunches of air sacs
- 14. fish have these instead of lungs
- 15. reaction when something irritates your nose
Down
- 1. when trachea or bronchi get irritated
- 3. a waste gas
- 5. what we breathe
- 6. prevents food from getting in your lungs
- 7. windpipe
- 8. breathe out
- 9. inhale and exhale
- 13. the place where oxygen enters the blood