Across
- 3. space at the back of the oral cavity
- 8. disease caused by smoking
- 11. cavity where lungs sit
- 12. required for cellular respiration
- 13. inflammation of air passages
- 16. bones of the nasal cavity
- 17. test that measures air volume
- 18. collapsed lung
- 19. tubes from trachea to lungs
- 20. muscle used for breathing
- 21. divides left and right nostrils
- 23. air sacs
- 24. voice box
Down
- 1. whooping cough
- 2. pause in breathing during sleep
- 4. spasm of the diaphragm
- 5. build up of fluid
- 6. windpipe
- 7. opening with vocal cords
- 8. prevents food from entering the airway
- 9. spaces within the skull bones
- 10. where cellular respiration takes place
- 14. lack of oxygen in tissues
- 15. keeps alveoli from collapsing
- 22. respiratory center of the brain