Respiratory System
Across
- 4. the windpipe
- 6. membrane surrounding the lungs
- 7. the voice box
- 8. infectious disease of the throat and upper respiratory tract, caused by bacteria
- 9. listening to the sounds in the chest
Down
- 1. central cavity between the lungs in the chest
- 2. the throat
- 3. collection of fluid
- 5. imperfect lung expansion, collapsed lung
- 10. thin hairs attached in the lining of the respiratory tract