Across
- 3. the main respiratory organ
- 5. catalyzes the reaction of converting carbon dioxide into hydrogencarbonate ions
- 6. causes decreasing of volume inside the thorax and increasing of pressure
- 7. explains decreased affinity of hemoglobin for oxygen because of increased acidity of blood
- 9. extremely thin alveolar cells that are adapted to carry out gas exchange
- 10. condition that occurs when surface area of alveoli is reduced for gas exchange because of breaking wall between individual alveoli
- 11. moves downwards when inspiration occurs
- 13. causes ribcage moving downwards and inwards
- 14. controlles the rate of ventilation
- 18. show the affinity of hemoglobin for oxygen
- 20. maintains concentration gradients of oxygen and carbon dioxide between air in alveoli and blood flowing
Down
- 1. the volume of air moved into or out the lungs
- 2. tiny sacs within the lungs that enable gas exchange between lungs and bloodstream
- 4. formed because of ease of dissociation on H+ and HCO3- ions
- 8. the pressure exerted by an individual gas within a mixture
- 12. tertiary structure protein in muscle tissues, serves for intracellular storage for oxygen
- 15. passageways of air between nose or mouth to alveoli
- 16. secrete moist surface in alveoli to prevent alveolus to adhere to each other
- 17. caused by smoking in 87% of cases
- 19. quarternary structure oxygen transport protein