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umbilical cord n a cord arising from the navel that connects the fetus with the placenta and contains the two umbilical arteries and the umbilical vein
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the strand of tissue connecting the fetus to the placenta. It contains two arteries that carry blood to the placenta and one vein that returns it to the fetus. It also contains remnants of the allantois and yolk sac and becomes ensheathed by the amnion.
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the flexible structure connecting the umbilicus of the embryo and fetus with the placenta and giving passage to the umbilical arteries and vein. In the newborn it measures about 50 cm in length. First formed during the fifth embryonic week from the connecting stalk, it contains the omphaloenteric duct (yolk stalk) and the allantois.Medical dictionary. 2011.