Download MBBS 1st Year 1022 RGUHS MBBS Physiology Paper I RS4 2023 Feb Question Paper

QP CODE: 1022

Rajiv Gandhi University of Health Sciences, Karnataka

MBBS Phase- I(CBME) Degree Examination-09-Feb-2023

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Time: Three Hours Max. Marks: 100Marks

PHYSIOLOGY- PAPER-I(RS-4)

Q.P.CODE: 1022

(QP contains two pages)

Your answers should be specific to the questions asked

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Draw neat, labeled diagrams wherever necessary

LONG ESSAYS 2x10=20Marks

1. Discuss the cardiorespiratory changes seen in a person doing moderate isotonic exercise

   Or

   Define Blood Pressure. List the factors regulating blood pressure. Add a note on long term regulation of blood pressure

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2. Explain the mechanism of HCL secretion in gastric juice and discuss the factors regulating it

SHORT ESSAYS 8x5=40 Marks

3. Explain the pressure changes in the lung during normal respiration

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4. Explain the organization of body fluids compartments. Mention one method to measure extra cellular fluid volume and total body water

5. Discuss the factors regulating glomerular filtration

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6. A 20-year-old male was brought to the casualty following a road traffic accident. On examination his extremities were found to be cold and clammy, heart rate 102/min and blood pressure 70/50 mm of Hg

   1. Explain the physiological basis of cold clammy extremities
   2. Classify shock and state Marey's law

7. Explain the intrinsic mechanism of coagulation

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8. Explain the Bohr effect and Haldane effect

9. Discuss the mechanism of fat digestion and absorption in gastrointestinal tract

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10. Describe the buffer systems present in renal tubules

SHORT ANSWERS 10x3=30Marks

11. Mention the physiological basis of increased ventilation perfusion ratio in apex of lung

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12. Classify anaemia on the basis of morphology with examples

13. Mention the causes for the waves of Jugular venous pulse

14. List different layers of respiratory membrane

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15. Explain the basis of using phototherapy for physiological jaundice

16. Explain the basis of megaloblastic anemia seen after gastrectomy

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17. Enumerate the function of platelets

18. Explain Laplace law with reference to urinary bladder

19. List the properties of cardiac muscle

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20. Explain the mechanism of action of loop diuretics

Multiple Choice Questions 10x1=10 Marks

21. Cephalic phase of gastric juice secretion is controlled mainly by

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    1. Neural factors
    2. Hormonal factors
    3. Gastric distension
    4. Presence of proteins in stomach

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22. Atrial systole coincides with ventricular

    1. Isometric contraction
    2. Rapid ejection phase
    3. Last rapid filling phase
    4. Isometric relaxation

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23. Descending limb of loop of Henle is permeable to all EXCEPT

    1. Water
    2. Sodium
    3. Urea

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    4. Glucose

24. PCO2 of alveolar air in mm of Hg

    1. 104
    2. 46

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    3. 40
    4. 27

25. Maximum velocity of conduction in the cardiac musculature is seen in

    1. SA node

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    2. AV node
    3. Bundle of His
    4. Purkinje fibers

26. Edema can develop due to

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    1. Decrease in capillary hydrostatic pressure
    2. Increase in interstitial fluid hydrostatic pressure
    3. Decrease in capillary oncotic pressure
    4. Decrease in interstitial fluid colloid osmotic pressure

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27. The plasma level at which a substance first appears in urine is

    1. Renal threshold
    2. Renal clearance
    3. Tubular maximum
    4. Filtered load

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28. Chief cells of gastric gland secrete

    1. Hydrochloric acid
    2. Mucous
    3. Pepsinogen

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    4. Intrinsic factor

29. Decompression sickness is due to

    1. Increased partial pressure of nitrogen in alveolar air
    2. Bubbling of CO2 in tissues

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    3. Decreased PO2 in atmospheric air
    4. Nitrogen bubbles in body fluids

30. Warfarin acts as an anticoagulant by decreasing

    1. Calcium content in blood

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    2. Active form of vitamin K
    3. Thrombin level
    4. Platelet aggregation

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