Across
- 6. The overall process of breathing and using oxygen in cells
- 7. Smaller branches of the bronchi that lead to the alveoli
- 9. To breathe in air through your nose or mouth
- 11. The waste gas your body produces that you breathe out (2 words)
- 13. The process of taking air in and letting it out
- 15. The gas your body needs to survive, taken in during breathing
- 18. A sticky substance that traps dirt and germs in the respiratory system
- 20. The flap that covers the trachea when you swallow
- 21. Tiny air sacs in the lungs where oxygen enters the blood
Down
- 1. The passage for both air and food
- 2. The main organs where gas exchange occurs in the body
- 3. One of the two openings in the nose where air enters
- 4. The muscle below the lungs that contracts to help you breathe in
- 5. Tiny hair-like structures that move mucus out of the lungs
- 8. The voice box located in the throat
- 10. The two tubes that branch from the trachea into each lung
- 12. Tiny blood vessels around the alveoli where gas exchange happens
- 14. A disease that inflames the tiny air sacs in your throat
- 16. The windpipe that carries air from the throat to the bronchi
- 17. To breathe out air from your lungs
- 19. The material that supports the trachea