There two vena cava in right …
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Yogita Ingle 5 years, 7 months ago
Two main veins namely superior and inferior vena cava bring deoxygenated blood to right auricle of heart from upper and lower part of body respectively. This blood is then passes to right ventricle from right auricle on its contarction and tricuspid valve gets closed at once so as to prevent back flow of blood from ventricle to auricle producing first heart sound called lubb.
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