What is the primary function of the lesser omentum?

The primary function of the lesser omentum is to connect the stomach and the liver. This structure is a thin fold of peritoneum, which extends from the lesser curvature of the stomach to the liver, specifically attaching to the hepatic portal area. The lesser omentum plays a significant role in anchoring these two organs in place and serves as a conduit for important structures such as blood vessels, lymphatics, and nerves that are involved in the digestive process.

In addition to its connective function, the lesser omentum also provides a pathway for the hepatic artery and the portal vein, both of which are essential for liver function and metabolism. While it does not primarily support the large intestine, facilitate nutrient absorption, or provide a protective barrier against pathogens, its connection between the stomach and liver is essential for maintaining the anatomical organization and physiological function of the digestive system.