Round ligament of liver

For other structures with similar name, see round ligament.

In anatomy, the round ligament of (the) liver (also commonly known by its Latin name, ligamentum teres - or more specifically ligamentum teres hepatis as the human body has three round ligaments in total) is a degenerative string of tissue that exists in the free edge of the falciform ligament of the liver.

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The round ligament represents the remnant of the left fetal umbilical vein. The round ligament therefore only exists in humans (and other animals) that are more than a few months old. Prenatally and for a month or two after birth, the umbilical vein is patent.

The umbilical vein/round ligament inserts around the umbilicus and is an important landmark of the inner surface of the anterior abdominal wall.