The thickening of walls of arteries is called
READ MORE +Circulatory System MCQs
An adult human with average health has systolic and diastolic pressures as
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a person shows production of interferons in his body, the chances are that he has got an infection of
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The interferons are
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The correct route through which pulse-making impulse travels in the heart is
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The lymph serves to
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In veins, valves are present to check backward flow of blood flowing at
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Antibodies in our body are complex
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HIV that causes AIDS first starts destroying
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The pace setter in the heart is called
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Cells involved in immune mechanism are
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Cells formed in bone marrow include
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