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Practice Test - 5

Welcome to your Human Physiology -2

1. 
Which gas is utilised by organisms to release energy?

2. 
Expiration is normally a

3. 
Which structure prevents food from entering trachea?

4. 
Breathing is best defined as

5. 
Which enzyme catalyses conversion of CO₂ to carbonic acid?

6. 
Inspiration occurs when

7. 
Which gas is transported least by blood?

8. 
Chloride shift occurs in

9. 
Bohr effect relates to

10. 
Alveolar walls are extremely thin to

11. 
Which membrane covers lungs?

12. 
Partial pressure of oxygen is highest in

13. 
Respiratory surface must be

14. 
Intrapulmonary pressure is pressure

15. 
Which condition favours oxygen binding to Hb?

16. 
Emphysema is caused by damage to

17. 
Number of lungs in humans is

18. 
Respiratory disorders affect mainly

19. 
Partial pressure gradient is essential for

20. 
In insects, respiration occurs through

21. 
Which pigment carries oxygen in humans?

22. 
Cutaneous respiration is seen in

23. 
Which condition increases oxygen release in tissues?

24. 
Which respiratory organ is used by fishes?

25. 
Smoking affects respiration by

26. 
Carbon dioxide is transported mainly as

27. 
Exchange of gases in lungs occurs due to

28. 
Oxygen dissociation curve shifts right due to

29. 
Myoglobin is present in

30. 
Oxygen is transported mainly by

31. 
Residual volume of lungs prevents

32. 
Which part of respiratory tract lacks cartilage?

33. 
Vital capacity is maximum amount of air that can be

34. 
Diaphragm is

35. 
Which gas has higher diffusion rate?

36. 
Which factor does NOT affect diffusion of gases?

37. 
Alveoli are specialised for

38. 
Hemoglobin is present in

39. 
Which muscle contracts during inspiration?

40. 
Which vertebrates respire only through lungs?

41. 
The thoracic cavity is anatomically an

42. 
Tidal volume refers to

43. 
Oxyhaemoglobin formation depends on

44. 
Exchange of gases in sponges occurs through

45. 
Total lung capacity includes