The lesser omentum connects the lesser curvature of stomach and cranial part of duodenum to the visceral surface of the liver.
It is the largest derivative of the ventral mesogastrium but is not nearly as large as the greater omentum which it resembles in structures although it contains less fat.
The lesser omentum loosely spans the distance from teh lesser curvature of the stomach to the porta of the liver and attaches to the abdominal floor, theline of attachment extending form the diaphragm to the umbilicus. The lesser omentum is continuous with the cranial mesoduodenum and attaches ot the margin of the oesophageal hiatus of to the diaphragm between the cardia of the stomach and the liver.
The lesser omentum is divided into two portions that are continuous: