Across
- 5. A paranasal sinus that aids in moistening the air
- 6. Tiny air sacs where gas exchange occurs
- 7. Cancer-causing substances
- 9. A serious bacterial infection that spreads through airborne droplets
- 10. Diaphragm relaxes and moves up while the ribs move down and in
- 12. Contains only two lobes
Down
- 1. Fluid around the lungs
- 2. When abnormal lung cells multiply rapidly
- 3. When bacteria become resistant to standard antibiotics
- 4. Small flap of cartilage that seals off the airway
- 8. Diaphragm contracts and moves down while the ribs move up and out
- 11. Chronic condition in which your airways inflame