#umbilical_cord__umbilicalcord  membranous duct connecting the fetus with the placenta
  supertype:  duct  funiculus  fetal_membrane
  part of:  conceptus  fetus
  part:  umbilical_vein__umbilicalvein__vena_umbilicalis  a vein in the umbilical cord; returns nutrient blood from the placenta to the fetus

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