Across
- 5. Tiny air sacs where gas exchange occurs
- 8. Primary organ for breathing
- 9. Voice box
- 10. Fluid that prevents alveoli from collapsing
- 13. The process of taking in air
- 14. Gas we breathe in
- 15. Gas we breathe out
- 18. Membrane that surrounds the lungs
- 20. Lung disease often caused by smoking
- 21. Two branches of the trachea leading to each lung
- 23. Inflamation of the bronchial tubes
- 24. Another name for the throat
- 26. Tube that food travels down
Down
- 1. The act of breathing
- 2. Protein in red blood cells that carries oxygen
- 3. Tube that connects the throat to the lungs
- 4. The space between the lungs in the chest cavity
- 6. The process of releasing air
- 7. Smaller branches of the bronchi
- 11. How gases move from the lungs to the bloodstream
- 12. Tiny hairs that filter air in the nose
- 16. Condition where airways become inflamed and narrow
- 17. Flap that covers the trachea when swallowing
- 19. System responsible for breathing
- 22. Muscle below the lungs that helps with breathing
- 25. Cavity where air first enters the body