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the ligamentum arteriosum develops from the ductus arteriosis in the fetus/embryo. the ductus arteriosis is a bypass mechanism where blood is not transported to the lungs as they are not yet functional. after birth lungs are necessary (nolonger a placenta for oxygen) so ductus arteriosum closes up and becomes the ligamentum arteriosum
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Earn +20 ptsQ: Which structure is in close relation to ligamentum arteriosum?
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