Across
- 2. offshoots of the bronchi
- 5. highway to the lungs
- 8. air sacs at the ends of bronchioles
- 9. voice box
- 10. where air goes after the trachea
Down
- 1. where oxygen enters the blood
- 3. where air enters the body; nose
- 4. blocks food from entering lungs
- 6. muscle beneath lungs
- 7. throat; behind nasal cavity