Date: 06-06-2014
BR 5003
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. Figure
to the right indicates marks. 3. Use separate
answer books for each section. 4. Draw
diagrams wherever necessary. 5. Write legibly.
Section 1

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1. Explain in detail: (any two) (10)
a. Functions of plasma proteins (A.59) (8.95)
b. Mechanism of platelet plug formation
(A.125) (8.153)
c. Functions of saliva (A.225) (B.739)

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2. A.Write brief notes on (any two) (6)
a. Functions of Liver
b. Importance of 'G protein' as IInd
Messenger
c. Erythropoiesis and factors affecting it

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(A.74) (B.108)
3. 8.Write brief on (any one) (3)
a. Action potential with its various phases
b. Properties of cardiac muscle (A.525)
(B.180)

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4. Give brief on (any two) (6)
a. Exocrine functions of pancreas
b. Absorption of lipids in small intestine
c. Regulation of secretion of Gastric juice
(A.232) (8.466)

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Section 2
1. Explain in detail (any two) (10)
a. Define cardiac cycle. Explain in detail all
the events of cardiac cycle given pressure
& volume changes in each. (A.534)

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(B.179)
b. Define blood pressure and discuss
Nervous mechanism for regulation of
blood pressure.
c. How Respiratory regulated and discuss

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Nervous regulation of respiration.(A.716)
(8.336)
2. 5A.Write briefly on (any two) (6)
a. Factors affecting heart rate
b. Hypoxia (A-756) (8.352)

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c. ECG
3. 58.Write briefly on (any one) (3)
a. Oxygen hemoglobin dissociation curve
b. Bainbridge Reflex (A.620)
4. 6.Write answers to the point in 2-3

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sentences: (6)
a. Define Landsteiner's Law (A.139) (8.165)

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b. Define motor unit (A.202) (8.75)
c. Why blood does not clot in the blood
vessels

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d. Name the neurotransmitter release at
release at ganglion of autonomic nervous
system
e. Lysosomes are "Garbage Disposal" of cell
(A.9) (8.10)

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f. Define all or none law (A-555)
g. What is Achlorhydria
h. Why cardiac muscle cannot be tetanized
i. Why Anaemia develops after gastrectomy
j. Why Bradycardia is seen in athletes

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