why does deoxygenated blood go to the lungs
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The pulmonary arteries carry deoxygenated blood to the lungs, where carbon dioxide is released and oxygen is picked up during respiration. Arteries are further divided into very fine capillaries which are extremely thin-walled. The pulmonary vein returns oxygenated blood to the left atrium of the heart.
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deoxgenated blood go to lungs for removal of CO2 from blood(as function of lungs is to oxygenate the blood as it has oxygen comes to it from air).After this oxygen addition takes place and blood again go to heart.
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