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Arteries are best defined as the vessels which -

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Important Questions on Body Fluids and Circulation

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Which one of the following statement is correct regarding blood pressure
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In a road accident, the injured person patient with unknown blood group needs immediate blood transfusion. One of his friends at once offers his blood. What was the blood group of the donor?
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A patient brought to hospital with myocardial infarction is normally given immediately 
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Compared to those of humans, the erythrocytes of frogs are:

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A person with blood group AB is considered a universal recipient because it has

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Blood pressure in the mammalian aorta is maximum during:
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Which one of the following animals has two separate circulatory pathways?
 
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Doctors use a stethoscope to hear the sound produced during each cardiac cycle. The second sound is heard when