0115 E019
First Year MBBS Examination
I MBBS Physiology Paper 1
Time: 3 hours Max Marks: 50
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Instructions: 1. Answer to the points. 2. Useseparate answer books for each section. 3.
Draw diagrams wherever necessary.
Section 1
1. Write briefly on (any two): (10)
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a. Hypovolemic shock-definition, causes,stages and compensatory mechanism(684)
b. Define pernicious anemi Give its causes,
clinical features and management. (90)
c. Define and classify hypoxi Describe hypoxic
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hypoxi (756)2. Write briefly on (any two): (6)
a. Formation of temporary hemostatic
plug/platelet plug (125)
b. Structures and functions of IgG (111)
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c. Catabolism/ Fate of hemoglobin (79)3. Write briefly on (any on: (3)
a. Diffusion(31)(17)
b. Na+-K+-ATPase pump (34)
4. Write briefly on (any two): (6)
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a. Tubulo-glomerular feedback mechanism(320)
b. Axon reflex (676)
c. Micturition reflex(355)(432)
Section 2
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5. Write briefly on (any two): (10)a. Describe the events occurring during left
ventricular systole along with changes in
pressure and volume. (560)
b. Baroreceptor reflex mechanism (633)
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c. Physiological basis of normal ECG (577)6. Write briefly on (any two): (6)
a. Chloride shift (744)
b. Pathophysiology of Caisson?TMs
disease(775) (362)
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c. Role of surfactant in lungs (715) (296)7. Write briefly on (any on: (3)
a. Rh incompatibility (143)
b. Cardiovascular changes during severe
exercise (695)
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8. Write answers in two or two sentences (anysix): (6)
a. Role of albumin in maintaining plasma
colloid osmotic pressure. (60)
b. Brain bridge reflex (620)
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c. Mechanism of action of bicarbonate buffer inkidney.(336)
d. Role of calcium influx during cardiac action
potential/plateau potential (551)
e. Vital capacity (727) (301)
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f. Windkessel effect (624)g. Transport maximum for glucose (325,326)
h. Why the capillaries don?TMt respond to the
sympathetic stimulation. (312)