MK 16803
First Year MBBS Examination
I MBBS Physiology Paper 1
Time: 3 hours Date: 07-06-2018 Max Marks: 50
Instructions: 1. Answer to the points. 2. Figure to the

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right indicates marks. 3. Use separate answer books
for each section. 4. Draw diagrams wherever
necessary. 5. Write legibly.
Section 1
1. Explain in detail: (any two) (10)

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a) Define "milieu interior" Explain various
mechanism of homeostasis
b) Intrinsic mechanism of coagulation. Write note
on anticoagulant used in vitro.
c) Write in detail about differences between

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smooth muscle and skeletal muscle.
2A. Write brief notes on (any two) (6)
a) Peptic ulcer
b) Swallowing reflex and achalasia cardia
c) Stages of erythropoiesis

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2B. Write brief on (any one) (3)
a) Active transport across cell membrane
b) What are immunoglobulin? Give its

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classification
3. Give brief on (any two) (6)

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a) "Negative feedback mechanism of homeostasis.
b) "Refractory period". What is the importance of
long refractory period in cardiac muscle action
potential?
c) Composition and functions of Bile.

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Section 2
4. Explain in detail (any two) (10)
a) Role of baroreceptors in blood pressure
regulation.
b) ECG changes in myocardial infarction

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c) Lung compliance
5A. Write briefly on (any two) (6)
a) Mechanism of inspiration
b) Coronary blood flow
c) Heat regulation in human body.

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5B. Write briefly on (any one) (3)
a) Left ventricular pressure changes in cardiac
cycle
b) Transport of carbon dioxide in blood
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