Download MBBS UHS Lahore 1st Year Physiology I SEQ Question Paper

Download MBBS (Bachelor of Medicine and Bachelor of Surgery) UHS Lahore (University of Health Sciences Lahore) 1st Year Physiology I SEQ Previous Year Question Paper

MBBS FIRST PROFESSIONAL (PART-I)
MODEL PAPER FOR ANNUAL 2009

Physiology

(Short Essay Questions)


Max. Marks 45 Time Allowed 2 hours 15 minutes


1.

Compare the features and functions of LYSOSOMES and



PEROXISOMES.

5



2.

Mr. Ali goes to a hilly area at an altitude of 10,000 feet. What will be



the effect on erythropoiesis? Explain the mechanism of this effect.





5

3.

Mr. Jamal developed intravascular blood clot. Explain the mechanism



of this blood clotting with the help of a sketch.

5



4.

Define REFRACTORY PERIOD and its types. What is its mechanism?



Give the normal value of ABSOLUTE REFRACTORY PERIOD of the



ventricular muscle.

2,2,1



5.

What is END-PLATE POTENTIAL? How is it produced? In which disease



end-plate potential is of low voltage?

2,2,1



6.

A middle aged man riding on a bicycle was hit by a speedy car. He got



multiple injuries and fell on the ground. He was taken to emergency



department of the hospital after one hour. He was bleeding profusely



from wounds. He was drowsy. On examination, radial pulse was rapid



and thready. Skin was pale, cold and clammy. Arterial blood pressure



was 70/50 mmHg:

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a) Which type of shock was he having?



b) Why was radial pulse rapid and thready?



c) Why was skin pale, cold and clammy?



d) Why was arterial blood pressure low?



7.

Draw the NORMAL ELECTROCARDIOGRAM (ECG). Show its waves and



intervals. Give TWO changes in the ECG in a patient of ACUTE



MYOCARDIAL INFARCTION.

3,2



8.

What are PERIPHERAL CHEMORECEPTORS ? Give their role in the



control of RESPIRATION.

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9.

Give FIVE functions of the SKIN. What are various temperature



decreasing mechanisms in the human body?

5