File talk:Gray39.png
The umbilical arteries should be more accurately depicted as blue, and the umbilical vein should be red (as it becomes oxygenated as 02 is exchanged from maternal to fetal blood at the placental barrier).
The umbilical arteries should be more accurately depicted as blue, and the umbilical vein should be red (as it becomes oxygenated as 02 is exchanged from maternal to fetal blood at the placental barrier).
