Why do the pulmonary arteries contain deoxygenated blood
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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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The pulmonary arteries carry deoxygenated blood from the right ventricle into the alveolar capillaries of the lungs to unload carbon dioxide and take up oxygen. These are the only arteries that carry deoxygenated blood, and are considered arteries because they carry blood away from the heart.
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