Across
- 3. breathe in
- 5. known as the voice box
- 6. tiny sac, where gas exchange takes place
- 10. caused by inflammation of the air sacs
- 11. caused by excess mucus in the body; hereditary
- 14. breathe out
- 15. structure that aids in breathing
Down
- 1. largest of the two lungs
- 2. connects the trachea to the lungs
- 4. chronic; inflames and narrows bronchial tubes
- 7. smallest of the two lungs
- 8. leaf-shaped cartilage behind the tongue
- 9. main organ of the respiratory system
- 10. connects the mouth to the larynx and esophagus
- 12. known as the windpipe
- 13. filler particles in nose