Respiratory System
Across
- 2. “wind pipe” that contains cartilage rings.
- 5. the main organ of the respiratory system.
- 6. disease that progressively destroys the walls of alveoli; usually caused by smoking.
- 8. “voice box”
- 9. external nasal openings.
- 10. keeps food out of lungs.
Down
- 1. sheet of muscle below the lungs.
- 3. air sacs of the lung.
- 4. a chronic lung disease that inflames and narrows the bronchial tubes.
- 7. disease caused by the inflammation of air sacs in the lungs.