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Other Terms: Arteria umbilicalis, Artère ombilicale
The umbilical artery is the internal iliac after it passes through the umbilicus in the fetus. The umbilical arteries wind around the umbilical vein, helping to form the umbilical cord, and are distributed to the placenta. After the placental circulation has ceased, all but a short portion of the lower end of the hypogastric artery becomes obliterated and forms the lateral umbilical ligament. The proximal end becomes reduced in size and forms the root of the superior vesical artery within the abdominal cavity.