Across
- 4. inspiration and expiration
- 6. 3 lobes in the right
- 7. smaller branches
- 9. breathe in through the nose
- 10. voice box
Down
- 1. windpipe
- 2. what closes and open when you swallow
- 3. the process of breathing
- 5. air sacs
- 8. breathe in through the mouth