5.NMC-Physiology-Week-05 (19-10-2014)

Narayana Medical PG Coaching - Week-05 Test (19-10-2014) Physiology (Respiratory Physiology-02, Cardiovascular System-01) 1. Alveolar ventilation per minute is equal to A. The volume of fresh air entering the alveoli per minute B. Total volume of air entering the respiratory tract per minute C. Product of tidal volume and respiratory rater per minute D. Maximum breathing capacity minus respiratory minute volume

C. Helium dilution method D. Dye dilution method 8. The percentage of total CO2 transported in combination with hemoglobin is A. 13% B. 30% C. 20% D. 7%

2. Apnea is defined as A. Stoppage of heart beat B. Cessation of respiration C. Irregular respiration D. Increased rate of respiration

9. The term Hamburger phenomenon refers to A. Movement of chloride out of RBC B. Movement of chloride into RBC C. Movement of carbon dioxide into RBC D. Movement of bicarbonate into RBC

3. Central cyanosis is seen if A. Methemoglobin is 0.5 g/dL B. O2 saturation is less than 85% C. O2 saturation is less than 94% D. Hemoglobin 4%

10. Maximum CO2 is transported in venous blood A. Dissolved in plasma B. Bound to plasma proteins C. Bound to hemoglobin D. As HCO2

4. In which of the following reduction in arterial oxygen tension occurs? A. Anemia B. CO poisoning C. Moderate exercise D. Hypoventilation 5. The following statements are true intrapleural pressure EXCEPT A. It is about – 3 mm Hg at the start inspiration B. It becomes +1 mm Hg at the end normal expiration C. It is a measure of elastic recoil of lung D. Blood flow to left atrium is facilitated negative intrapleural pressure

11. Anemic hypoxia occurs in A. Cyanide poisoning B. CO poisoning C. Carbon dioxide toxicity D. Vascular stasis

of 12. Oxygen therapy is of minimum use in A. Hypoxic hypoxia B. Anemic hypoxia C. Stagnant hypoxia D. Histotoxic hypoxia

of of

13. All the following are seen in high altitude climbers EXCEPT A. Hyperventilation B. Decreased Paco2 C. Pulmonary edema D. Bradycardia

by

6. Pneumotaxic centre is located in the A. Hypothalamus B. Upper part of pons C. Medulla D. Lower part of pons

14. In high altitude mountain sickness, feature of pulmonary edema is A. Decreased pulmonary capillary permeability B. Increased pulmonary capillary pressure

7. Residual volume can be measured by A. Drinker’s respirator B. Tonometer 1

Narayana Medical PG Coaching - Week-05 Test (19-10-2014) Physiology (Respiratory Physiology-02, Cardiovascular System-01) C. Increased left atrial pressure D. Increased left ventricular back pressure

C. Pneumotaxic centre D. Carotid and aortic bodies

15. Deep sea diving is associated with A. Dysbarism B. Respiratory distress syndrome C. Acclimatization D. Pnemothorax

22. The following statements regarding Hering – Breuer inflation reflex are true EXCEPT A. The reflex is initiated by stimulation of stretch receptors of lung B. The reflex inhibits inspiration C. The afferent impulses mediating the reflex is transmitted though glossopharyngeal nerve D. The reflex help to prevent overinflation of lung

16. Spirometer measures all the following EXCEPT A. Tidal volume B. Vital capacity C. Expiratory reserve volume D. Functional residual capacity

23. Oxygen therapy is most effective in A. Anemic hypoxia B. Hypoxic hypoxia C. Histotoxic bypoxia D. Stagnant hypoxia

17. The correct statement regarding pulmonary surfactant is A. It is made of mucin B. Secreted by type I pneumocyte C. Maintain alveolar intergrity D. Under electron microscopy, eosinophilic nodules are found

24. Acclimatization include all the following EXCEPT A. Bradycarida B. Hyperventilation C. Increase in 2,3 – BPG D. Increase in erythropoietin

18. Apnea following voluntary hyperventilation is due to A. Rise in Po2 of arterial blood B. Fall in Pco2 of arterial blood C. Rise in H+ concentration of arterial blood D. Fall in Po2 of arterial blood

25. Acute hypoxia and hypercapnia occur together in A. Asthma B. Emphysema C. Asphyxia D. Hyperventilation

19. Diffusion across the respiratory membrane may be affected by all the factors EXCEPT A. Area of the membrane B. Thickness of the membrane C. Molecular weight of the gas D. Pulmonary capillary pressure

26. The first heart sound is produced by the (AIPG – 96) A. Closure of the aortic and pulmonary values B. Opening of the aortic and pulmonary values C. Closures of the mitral and tricuspid values D. Opening of the mitral and tricuspid values.

20. Oxygen debt refers to the extra amount of oxygen consumed A. At the beginning of exercise B. During muscular exercise C. After exercise is over D. At the thought of exercise

27. Parasympathetic stimulation of causes(MAN – 99) A. SA node decreases firing B. Increased AV node excitability

21. Breathing stops upon destruction of A. Medulla oblongata B. Cerebellum 2

heart

Narayana Medical PG Coaching - Week-05 Test (19-10-2014) Physiology (Respiratory Physiology-02, Cardiovascular System-01) C. Decreased ventricular contraction D. Tachycardia.

C. Isovolumetric contraction D. None of the above

28. Normally, the rate of the heart beat in a human is determined by (AIPG – 98) A. The bundles of His B. All cardiac muscle C. The sinoatrial node D. The cervical ganglion.

35. Minimum blood pressur is in (AIMS- 98, AIPG – 96) A. Aorta B. Arteries C. Capillaries D. Venules

29. The ventricle repolarisation in ECG is best seen in (KAR – 02) A. P wave B. Q wave C. R wave D. T wave

36. Under normal conditions, the major factor that will determine the cardiac output is (APPSC – 99) A. Availabitlity of Ca ions B. Aortic pressure C. Heart rate D. Rate of venous return

30. Stroke output of each ventricle in normal adult is (KAR – 01) A. 30ml B. 130ml C. 70ml D. 5 litres

37. Consider the following statements (TNPSC – 99) A. Starlings law of heart states that increases in force of contraction is directly related to cardiac output. B. Starling’s law of heart states that the force of contractionis directly related to the end diastolic volume C. Both A and B D. None of the above

31. Cardiac output is a measure of (AIPG – 97) A. Peripheral resistance x liver fluid B. Peripheral resistance x cardiac rate C. Blood pressure x cardiac rate D. Heart rate x blood volume

38. Peripheral resistance (TNPSC – 99) A. Aorta B. Artery C. Arteriole D. vein

32. Cardiac output is not affected by (AIPG – 95) A. Heat rate B. Peripheral resistance C. Systolic blood pressure D. Venous resistance

is

maximum

in

39. Stimulationof baroreceptor leads to A. Increased blood pressure,increased heart rate B. Decreased B.P ,decreased heart rate C. Increased B.P, decreased heart rate D. Decreased B.P, increasedheart rate

33. The larger function of the total peripheral resistance is due to (AIPG – 99) A. Venular B. Arterioles C. Capillaries D. Precapillary sphincter

40. Increased function demand on the heart produces increased size of the myocardium by A. Hyper plasia B. Hyperterophy

34. All the heart valves are openduring which stage of cardiac cycle (AIPG – 96) A. Systolic ejection B. Isovolumetric relaxation 3

Narayana Medical PG Coaching - Week-05 Test (19-10-2014) Physiology (Respiratory Physiology-02, Cardiovascular System-01) 47. Coronary blood flow predominantly controlled by A. Autoregulation B. Hormones C. Parasympathetic impules D. Sympathetic impulses.

C. Fatty infiltration D. Increased amounts of fibrous connective tissue 41. Cardiac index is related to A. Cardiac output and body weight B. Cardiac output and body weight C. Cardiac output and work of the heart D. Stroke volume and pulse rate.

is

usually

48. Cardiac cycle duration in man is A. 0.4 sec B. 0.8 sec C. 12 sec D. 1.6 sec

42. Absolute refractory period is heart? A. Longer than refractory period in skeletal muscle B. A phase of cardiac cycle in which heart cannot be stimulated by any amount of stimulus. C. Corresponds with duration of action potential D. All of the above

49. First heart sound occurs during the period of A. Isotonic relaxation B. Isovolumetric relaxation C. Isovolumetric contration D. Isotonic contraction

43. Closure of aortic valve occurs before the following event A. Isovolumetric contraction B. Isovolumetric relaxation C. Prediastole D. Presystole

50. Absolute period when whole heart is in diastole is A. 0.7sec B. 0.3sec C. 0.7sec D. 0.4sec

44. Conduction velocity is least is A. AV node B. Bundle of His C. SA node D. Purkinje’s fibers

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45. Fastest conducting tissue is human heart is A. AV node B. SA node C. Bundle of His D. Purkinje’s bundles. 46. Under resting condition’s the cardiac output is A. 2.5 B. 4.25 C. 5.25 D. 9.5

4

Narayana Medical PG Coaching - Week-05 Test (19-10-2014) Physiology (Respiratory Physiology-02, Cardiovascular System-01) ANSWERS

30

D

Q. No

Ans

31

B

1

A

32

B

2

B

33

A

3

B

34

C

4

D

35

C

5

B

36

A

6

B

37

C

7

C

38

D

8

B

39

B

9

B

40

A

10

D

41

C

11

B

42

A

12

D

43

C

13

D

44

B

14

B

45

B

15

A

46

B

16

D

47

B

17

C

48

D

18

B

49

C

19

D

50

C

20

C

21

A

22

C

23

B

24

A

25

C

26

B

27

A

28

B

29

D 5