Human circulatory system is double circulating. Justify.Class 11

1.	Human circulatory system is double circulating. Justify.Class 11
Answer» The double circulation of blood includes:(i) Systematic Circulation(ii) Pulmonary CirculationSystematic Circulation\tSystemic circulation transfers oxygenated blood from left ventricles to capillaries in the tissue.\tThe oxygen-rich blood is passed to the aorta for distribution into various body sections.\tThe veins and venules later absorb the deoxygenated blood which is rich in carbon dioxide from different parts of the body.\tThe deoxygenated blood is transferred back to the superior vena cava, then on to the right atrium.\tThe right atrium transports blood to the right ventricle for pulmonary circulation, after receiving the deoxygenated blood.Pulmonary Circulation\tThe distribution of blood starts in the pulmonary circulation from the right atrium to the left atrium.\tThe pulmonary artery receives the blood from the right ventricle and carries to the lungs for oxygenation.\tWhen the oxygenated blood is pumped back to the left atrium via the pulmonary vein, that is brought to the left ventricles, after the purification process.It is necessary for a human being to separate oxygenated and de-oxygenated blood because this makes their circulatory system more efficient and helps in maintaining constant body temperature.

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