Across
- 2. brings air to lungs quicker than nose
- 4. substance in red cells used for transportation
- 6. passage from nasal cavity to esophagus
- 7. splits into three areas in lungs
- 8. large sponge like organ
Down
- 1. allows for gas exchange
- 3. conduct air into alveoli
- 5. passage for air to go in and out of lung
- 9. warms and filters air before entering lungs