Across
- 4. inhaling and exhaling
- 5. small terminal branches of the bronchi that lack cartilage
- 8. irreversible enlargement of the air spaces in the lungs
- 9. examination is followed with radiologic studies to confirm diagnosis
- 10. Acute infection of the principal tissues of the lungs
Down
- 1. essential to the survival of living cells
- 2. extends from the neck into the chest
- 3. wheezing, coughing, and shortness of breath are the most common symptoms
- 6. can be fatal to elderly people or people with chronic heart disease
- 7. serves as a passageway for food and air