Across
- 3. The external openings leading to the nasal cavities.
- 7. An infection of the lungs and causes difficulty breathing.
- 8. At the ends of the bronchial tree are millions of tiny air sacs.
- 10. A fairly common condition that can make breathing difficult.
Down
- 1. Breathing organs that are large, soft, and cone-shaped.
- 2. A large muscle that separates the chest from the abdomen.
- 4. A swelling or inflammation of the bronchi.
- 5. The respiratory tube that extends from the larynx to the primary bronchi.
- 6. Air sacs in the lungs become enlarged and lose their elasticity.
- 9. The voice box