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Part of the fetal circulation in humans
Ligamentum venosum
The ligamentum venosum courses along the visceral/posterior aspect of the liver in the fossa for ductus venosum, which separates the caudate lobe and the left lobe.
It is invested by the peritoneal folds of the lesser omentum within a fissure on the visceral/posterior surface of the liver between the caudate and main parts of the left lobe.