എട്രിയങ്ങൾ സങ്കോചിക്കുമ്പോൾ രക്തം എവിടേക്ക് പോകുന്നു?
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Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve.
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right ventricle
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