Across
- 3. waste gas that we breathe out
- 4. Another name for air sacs
- 6. Chamber behind nose and mouth leading to esophagus and trachea
- 8. Common condition in children which causes difficulty in breathing
- 12. What we can do to keep our lungs healthy
- 14. Another name for voice box
- 15. Breathe in, expanding the lungs
Down
- 1. Tubes that connect the trachea to the lungs
- 2. cleans, moistens and warms the air we breathe
- 5. vital organs of the body that helps us breathe
- 7. Disease resulting from many years of smoking
- 9. Another name for windpipe
- 10. Chemical in cigarettes that can permanently damage the lungs
- 11. Dome-shaped sheet of muscle, main muscle for breathing
- 13. Flap of tissue that prevents food from going down the trachea