Please explain this line, "As the ventricular pressure declines further the tricuspid and bicuspid valves are pushed open by pressure in the Atria exerted by the blood which was being emptied into them by the veins"
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See, we know that there are valves which open and close during blood circulation in the heart. Valves open only when there is pressure on each side as we know pressure from both side wont let the valves to open any side..
So, when veins carry blood and empty it into the atrium, it exerts a pressure which makes valves to push another side like opening of a door and inside ventricals pressure is low as compared to atria. so valves have to open .
So, when veins carry blood and empty it into the atrium, it exerts a pressure which makes valves to push another side like opening of a door and inside ventricals pressure is low as compared to atria. so valves have to open .
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