Across
- 2. to draw air into and expel it from the lungs
- 4. a slippery thick sticky substance that coats the nasal passage
- 7. a stiff-walled tube of the respiratory system that connects the pharynx with the lungs
- 9. bag like organs used for breathing
- 10. progressively smaller tubular branches of the airways.
Down
- 1. a flap of cartilage behind the root of the tongue
- 3. the process that all living things go through to create the energy they need to live
- 5. the hollow muscular organ forming an air passage to the lungs and holding the vocal cords in humans
- 6. the large air tubes leading from the trachea to the lungs.
- 8. allow oxygen from the air to pass into your blood