Across
- 1. Mass of air sacs
- 6. Increases volume of chest cavity
- 7. Important for singers
- 9. Process of breathing air in
Down
- 2. Pair that hang in pleural cavities
- 3. Small flap of cartilage, back of the tongue
- 4. Occurs as pressure in lungs increases
- 5. Branch off the trachea and carry air
- 8. Funnel shape, connects nasal cavity to foodpipe