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