Fetal Circulation 14. For each of the following structures, first indicate its function in the fetus; then, note its fate (what happens to it or what it is converted to after birth). Structure Function in fetus Fate and postnatal structure Umbilical artery Umbilical vein Ductus venosus Ductus arteriosus Foramen ovale Which blood vessel carries the most oxygen-rich blood?

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