Across
- 2. Hairlike projections on the outside of cells
- 4. Reduction in diameter of a bronchiole
- 5. Maintains the surface tension of the alveoli
- 6. Breathing in
- 9. Space between the folds of the pleura
- 11. Tiny sacs of lung tissue that conduct gas exchange
- 13. Reduced rate and depth of respiration increasing carbon dioxide in blood
Down
- 1. Breathing out
- 3. Increased rate of respiration decreasing carbon dioxide
- 4. Abnormally slow breathing
- 7. Absence of breathing
- 8. A flap of tissue that searl off the windpipe
- 10. An increase in diameter of a bronchiole
- 12. Voice box