As the liver grows into the meso-derm of the ventral mesogastrium (ie, caudal part of the septum transver-sum), it obtains its stroma, capsule and peritoneal covering from this meso-derm and divides the ventral mesentery of the stomach into two membranous peritoneal ligaments: (1) lesser omen-turn, and (2) falciform ligament. The lesser omentum extends between the liver (porta hepatis and fissure for the ligamentum venosum) to the lesser curvature of the stomach and upper border of the first and second parts of the duodenum. The free margin of the lesser omentum contains the common bile duct, hepatic artery and portal vein. The falciform ligament extends from the anterior abdominal wall to the anterior surface of the liver. The free margin of this ligament contains the umbilical vein, which becomes obliterated after birth and forms a fibrous cord know as ligamentum teres.