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why pulmonary arteries contain deoxygenated blood |
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Answer» Pulmonary artery arises from right ventricle of heart. Right ventricle in turn receives blood from right atrium. Right atrium receives deoxygenated blood from all over the body through superior vena cava, inferior vena cava and coronary sinus.So, pulmonary artery receives deoxygenated blood from right side of heart. This is nature\'s design that this blood enters lungs for unloading of carbondioxide and subsequent loading of oxygen can take place. In humans, it is necessary to keep oxygenated and deoxygenated bloods separate .For this very reason, oxygenated blood is carried by pulmonary veins to other body parts and deoxygenated blood is carried by pulmonary arteries to the lung and is pumped by heart.??? |
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