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{{Short description|Vein running from the placenta to the fetus}}
{{Infobox Vein
| Name = Umbilical
| Latin = vena umbilicalis
| Image = Gray502.png
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| Caption2 = Human embryo. [[Human brain|Brain]] and [[Human heart|heart]] represented from right side. [[Digestive tube]] and [[yolk sac]] in median section. (Umbilical vein labeled at bottom left.)
| DrainsTo = [[Inferior vena cava]]
| Artery = [[
}}
The '''umbilical vein''' is a [[vein]] present during [[fetal development]] that carries [[oxygenated blood]] from the [[placenta]] into the growing [[fetus]]. The umbilical vein provides convenient access to the central circulation of a neonate for restoration of blood volume and for administration of glucose and drugs.<ref name=":0" />
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Closure of the umbilical vein usually occurs after the [[umbilical arteries]] have closed. This prolongs the communication between the placenta and fetal heart, allowing for a sort of [[autotransfusion]] of remaining blood from the placenta to the fetus.
Within a week of birth, the neonate's umbilical vein is obliterated and is replaced by a fibrous cord called the [[Round ligament of liver|round ligament of the liver]] (also called ''{{Lang|
==Recanalization==
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