Across
- 5. main air passages
- 7. another word for windpipe
- 8. air passages that link off of the bronchi's
- 10. another word for voice box
Down
- 1. breathe in air through
- 2. protects the lungs and heart
- 3. breathe in air through
- 4. underneath the lungs
- 6. behind the mouth and nasal cavity
- 9. main respiratory organ