Across
- 3. The pipe sends air to the lungs
- 5. The spreading of something more widely
- 6. Exchange oxygen, carbon-dioxide in the blood
- 8. Splits the air into each lung
- 9. The thing we breathe
- 10. Organ that collects the air
- 11. Muscle used to smell and breathe
Down
- 1. This is what we exhale
- 2. The tiny blood vessels
- 4. Inflates and deflates the lungs
- 7. Tubes that connect bronchus to alveoli