Physiology - Respiratory System
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Question 1 of 54
1. Question
During inspiration when the diaphragm contracts, the intrapleural pressure becomes:
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Question 2 of 54
2. Question
A decrease in the arterial PO2 is seen in:
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Question 3 of 54
3. Question
The major sign of hypoventilationis:
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Question 4 of 54
4. Question
tidal volume in adult is:
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Question 5 of 54
5. Question
Most effective method of assessing breathing is by measuring :
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Question 6 of 54
6. Question
The volume of gas in the lungs at the end of normal expiration is
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Question 7 of 54
7. Question
Oxygen dissociation curve shifts to the right by all of the following except:
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Question 8 of 54
8. Question
The type of hypoxia present in high attitude is:
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Question 9 of 54
9. Question
The best stimulator of respiratory centre is:
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Question 10 of 54
10. Question
Vital capacity is decreased, timed vital capacity (FEV 1.0 %) is normal in:
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Question 11 of 54
11. Question
What effect does hyperventilation have on the oxygen binding affinity of hemoglobin?
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Question 12 of 54
12. Question
Surfactant is secreted by :
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Question 13 of 54
13. Question
During the initial part of inspiration , which of the following does not occur?
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Question 14 of 54
14. Question
Alveolar O2 tension is:
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Question 15 of 54
15. Question
Cyanosis or bluish coloration of skin and mucus membrane depends upon:
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Question 16 of 54
16. Question
Hypoxia is characterized by :
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Question 17 of 54
17. Question
Limitation of inspiration by vagal lung inflation signals is called the:
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Question 18 of 54
18. Question
The intrapleural pressure at the end of deep inspiration is :
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Question 19 of 54
19. Question
Smoking causes:
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Question 20 of 54
20. Question
The alveolar ventilation in an individual with tidal volume: 600 ml, dead space 150 ml and respiratory rate of 15/ minute is :
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Question 21 of 54
21. Question
Non- respiratory function of the lung is:
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Question 22 of 54
22. Question
Oxygen dissociation cure is shifted to the right in all except:
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Question 23 of 54
23. Question
Oxygen affinity is increased by all except
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Question 24 of 54
24. Question
Muscle of expiration:
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Question 25 of 54
25. Question
Arterial O2 content is reduced in one of following :
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Question 26 of 54
26. Question
In which of the following diseases would you expect to find an increase in thickness of the respiratory membrane?
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Question 27 of 54
27. Question
Oxygen affinity decreases in:
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Question 28 of 54
28. Question
Arterial PO2 is reduced in:
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Question 29 of 54
29. Question
Vital capacity is a measure of:
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Question 30 of 54
30. Question
Which of the following does not stimulate alveolar hyperventilation ?
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Question 31 of 54
31. Question
Ventilation perfusion ratio is maximum in:
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Question 32 of 54
32. Question
The most common form of hypoxia is:
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Question 33 of 54
33. Question
Increase in partial pressure of CO2 leading to release of oxygen to the tissues is:
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Question 34 of 54
34. Question
In haldane effect CO2 dissociation curve is shifted to:
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Question 35 of 54
35. Question
Which of the following statements about pulmonary surfactant is false?
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Question 36 of 54
36. Question
The oxygen tension of the mixed venous blood is:
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Question 37 of 54
37. Question
At high altitudes the following changes takes place except:
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Question 38 of 54
38. Question
Kussmamul’s respiration occurs in response to
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Question 39 of 54
39. Question
Shift of the oxygen dissociation curve to right is caused by the following factors EXCEPT:
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Question 40 of 54
40. Question
Energy expenditure during normal breathing
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Question 41 of 54
41. Question
The work of breathing
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Question 42 of 54
42. Question
Normal intrapleural pressure during the start of inspiration is _________ mm of Hg.
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Question 43 of 54
43. Question
In cases of hypercapnia there is
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Question 44 of 54
44. Question
Bronchial circulation is associated with
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Question 45 of 54
45. Question
Carbon monoxide poisoning causes
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Question 46 of 54
46. Question
Which of the following adaptations will be apt to increase the work capacity at high altitude
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Question 47 of 54
47. Question
An important non- respiratory function of lungs is:
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Question 48 of 54
48. Question
The quantity of water lost in expired air each 24 hrs is about
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Question 49 of 54
49. Question
What is true about pneumothorax?
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Question 50 of 54
50. Question
Oxygen as an emergency drug is contraindicated in
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Question 51 of 54
51. Question
The approximate amount of air left in the lungs after maximal forced expiration in a normal woman
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Question 52 of 54
52. Question
The transport of CO is diffusion limited because
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Question 53 of 54
53. Question
Inability of exchange of oxygen through lung tissue if known as:
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Question 54 of 54
54. Question
Carotid body function in an organ work as:
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