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In humans, blood passes from the post caval to the diastolic right atrium of heart due to:

Pressure difference between the post caval and atrium
Pushing open of the venous valves
Suction pull
Stimulation of the sino auricular node
Additional Questions

The most active phagocytic white blood cells are:

Answer

In normal blood pressure of 120/80 mm Hg, the numerator represents

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To obtain a standard ECG, a patient is connected to the machine with three electrodes

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The blood does not clot inside the body because of :

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Which is the correct sequence of arrangement of types of W.B.C. in decreasing order in terms of number per mm3 of human blood?

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The average diameter of Red Blood Corpuscles of man is

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When body tissues are injured resulting in the loss of blood, the process of blood clot begins and the blood platelets release

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If one litre of water is introduced in human blood, then

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Value of cardiac output is

Answer

Blood vessels taking blood from lungs to heart are

Answer
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