RxPG - Recall: KERALA PG 2006 Physiology Questions With Keys

19. The rapid depolarization in cardiac muscle is due to
1. Ca++
2. Na++
3. K++
4. Mg++

20. The resting membrane potential of smooth muscle cells is
1. -20 to -30
2. -50- to -70
3. -70 to -90
4. -90 to -110

21. False about saltatory conduction
1. It occurs in nonmyelinated nerves
2. Depend on nodes of ranveir
3. It’s a fast process
4. Lower energy is consumed

22. FALSE about excitatory post synaptic potential
1. Its localized
2. Summating
3. It weans of in exponential rate
4. Hyperpolarisation occurs

23. central chemo receptors are stimulated by
1. H+ ions
2. Co2
3. Hypoxia
4. Hco3

24. prolactin inhibiting substance is
1. dopamine
2. adrenalin
3. thyroxin
4. ACTH

25. Duration of atrial systole
1. .53
2. .28
3. .08
4. .11

26. Peripheral resistance is inversely proportional to
1. Diameter
2. Vasomotor tone
3. Cardiac output
4. Viscosity

27. ADH is released in
1. Increased ECF volume
2. Increased ECF osmolarity
3. Increased BP
4. Deceased ECF osmolarity

28. Which is ideal for GFR estimation
1. Inulin clearance
2. PAHA clearance
3. Urea clearance
4. All the above

29. Lifespan of RBC is...
1. 100days
2. 120 days
3. 60 days
4. 160 days

30. Which of the following is true about surfactant
1. It decreases the compliance
2. It degreases pulmonary edema
3. It increases surface tension
4. It enhance the collapse of alveoli

31. What is the pressure of inspiration?
1. Intra plural
2. Trans pulmonary
3. Trans chest wall
4. Intra bronchial

32. Heart muscle acts as a functional synctitium because
1. Striations
2. Gap junctions
3. Long action potential
4. It is involuntary

33. Bleeding time is done to assess
1. Platelet function
2. Intrinsic pathway
3. Extrinsic pathway
4. Coagulation cascade

34. Angiotensin is activated in
1. lung
2. liver
3. kidney
4. intestine

35. Which is the corpus luteum salvage hormone which maintains corpus luteum
1. B-HCG
2. FSH
3. AFP
4. Estrogen

36. Velocity of blood flow is inversely proportional to
1. Square of radius
2. Compliance of vessel wall
3. Cardiac output
4. Stroke volume

37. Systolic BP is directly proportional to
1. Compliance of vessel wall
2. Stroke volume
3. Radius of vessels
4. Elasticity of vessel

38. normal pco2 of arterial blood
1. 20
2. 40
3. 60
4. 80

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PHYSIOLOGY ANSWERS

(Ref: Ganong 22nd Edition)
19. B (Ganong 78)
20. B (Ganong 82)
21. A (Ganong 57)
22. D (Ganong 89)
23. A (Ganong 675)
24. A (Ganong 423)
25. D (Ganong 567)
26. A (Ganong 582)
27. B (Ganong 729)
28. A (Ganong 706)
29. B (Ganong 532)
30. B Ganong 655,656)
31. C
32. B (Ganong 78)
33. A (Need a ref?)
34. A (Ganong 455)
35. A (Ganong 449)
36. A (Ganong 587)
37. B (Ganong 586)
38. B Ganong 667)

Prepared by Dr. Mohamed Abdul Latheef. T.K. with the help of Dr. Sandeep. P, Dr. Jamal, Dr. Paul. T. Antony and Dr. Paramez. Sorry for any mistakes. We have tried our best to compile this question paper. Thank you.