Which ligament is the remnant of the ductus venosus?

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Fetal circulation includes a shunt that bypasses the liver: the ductus venosus allows blood from the umbilical vein to flow directly into the IVC, avoiding hepatic sinusoids. After birth this vessel closes and leaves behind a fibrous cord known as the ligamentum venosum, which sits in the fissure for the ligamentum venosum on the liver’s visceral surface, running from the porta hepatis to the caudate lobe. This remnant marks where the ductus venosus once passed. The other options represent different fetal remnants: the ligamentum teres is the remnant of the umbilical vein within the free edge of the falciform ligament; the falciform ligament is a peritoneal fold connecting the liver to the anterior abdominal wall; the coronary ligament is a peritoneal reflection around the liver, not a fetal vessel remnant.