Video encyclopedia

Umbilical cord


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In placental mammals, the umbilical cord 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 normally contains two arteries and one vein, buried within Wharton's jelly. The umbilical vein supplies the fetus with oxygenated, nutrient-rich blood from the placenta. Conversely, the fetal heart pumps deoxygenated, nutrient-depleted blood through the umbilical arteries back to the placenta.
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  • Structure and development 

  • Function 

  • Clinical significance 

  • The umbilical cord in other animals 

  • Other uses for the term "umbilical cord" 

  • Cancer-causing toxicants in human umbilical cords