Respiratory
Across
- 2. nose hairs
- 4. lack of oxygen
- 7. thin, double-layered serosa
- 8. difficulty breathing
- 10. main organ in the respiratory system
- 11. inflammation of the voice box
- 13. voice box
- 15. inhalation and exhalation
Down
- 1. instrument used to view the voice box
- 3. instrument used to measure breathing
- 5. inflammation of the pleura
- 6. throat
- 9. air sacs in the lungs
- 12. without breathing
- 14. windpipe