Across
- 2. inflating and deflating the lung
- 4. an acidic colorless gas
- 7. connect the bronchus to the alveoli
- 8. sends air to the lungs
- 10. breath in and out from,and smell from
- 11. smallest numerous of the blood vessels
Down
- 1. net passive movement of molecules
- 3. organ that collects the air
- 5. member of the chalcogen
- 6. exchange oxygen and carbon dioxide
- 7. splits the air into each lung
- 9. protects the organs