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Function of the lungsThe function of the lungs is to transport  oxygen into the bloodstream and to take carbon dioxide out of the  bloodstream.trust me, my crappy college prâ¦ofessor told me so. he is  a poohead.
1 Primary function is to obtain oxygen for use by body's cells & eliminate carbon dioxide that cells produce. 2  Includes respiratory airways leading into (& out of) lungs plus the lungs themselves.