Across
- 4. maximum number of oxygen molecules that
- 5. throat
- 6. movement of air into and out of lungs
- 8. carbon dioxide bound to hemoglobin
- 10. the heart
- 13. in cells
- 14. in the body; ion
- 15. takes place at the respiratory membrane
- 16. where diffusion of gases occurs
- 18. be bound by one hemoglobin molecule
- 20. protein molecule in blood that binds
- 22. hemoglobin
- 23. number of iron ions in hemoglobin
Down
- 1. respiration that involves exchange of
- 2. notch, indentation on the left lung that
- 3. product form with oxygen combines with Fe
- 7. airway; windpipe
- 9. cells which produce surfactant
- 11. respiration that involves oxygen
- 12. form in which most carbon dioxide is
- 17. between lungs and blood
- 19. inflammation of the pleural membranes
- 21. respiration that involve exchange of gases between blood and body cells