Editing Umbilical cord (section)

{{Short description|Conduit between embryo/fetus and the placenta}}
{{Distinguish|Umbilical cable}}
{{Infobox embryology
| Name        = Umbilical cord
| Latin       = funiculus umbilicalis
| Image       = Umbilicalcord.jpg
| Caption     = Umbilical cord of a three-minute-old baby. A medical clamp has been applied.
| Image2      =
| Caption2    =
}}

In [[Placentalia|placental]] [[mammal]]s, the '''umbilical cord''' (also called the '''navel string''',<ref>{{cite web |title=Umbilical |url=http://www.etymonline.com/index.php?frame=0&search=Umbilical+&searchmode=none |url-status=live |archive-url=https://web.archive.org/web/20160304071009/http://www.etymonline.com/index.php?frame=0&search=Umbilical+&searchmode=none |archive-date=4 March 2016 |access-date=27 March 2018 |website=Online Etymology Dictionary}}</ref> '''birth cord''' or '''''funiculus umbilicalis''''') is a conduit between the developing [[embryo]] or [[fetus]] and the [[placenta]]. During [[prenatal development]], the umbilical cord is physiologically and genetically part of the fetus and (in humans) normally contains two [[arteries]] (the [[umbilical arteries]]) and one [[vein]] (the [[umbilical vein]]), buried within [[Wharton's jelly]]. The umbilical vein supplies the fetus with [[oxygen]]ated, [[nutrient]]-rich [[blood]] from the [[placenta]].<!--
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WARNING!

On multiple occasions, people have changed this section of text to state that the umbilical arteries carry oxygenated blood to the fetus, and that the umbilical vein carries deoxygenateay. THIS IS INCORRECT. The article as it stands is correct, as the nomenclature reflects the fact that the umbilical arteries carry blood from the fetal heart, while the umbilical vein carries blood towards it.

Please pick up a copy of Gray's Anatomy before making a fool of yourself and wrecking the article in the process.
****************** -->  Conversely, the fetal heart pumps low-oxygen, nutrient-depleted blood through the umbilical arteries back to the placenta.