Lesser omentum

Lesser Omentum

Lesser omentum (pronunciation: /ˈlɛsər ˈoʊməntəm/) is a double layer of peritoneum that extends from the liver to the lesser curvature of the stomach and the beginning of the duodenum.

Etymology

The term 'omentum' is derived from the Latin word 'omentum', which means 'fat skin'. The prefix 'lesser' is used to differentiate it from the larger, more extensive greater omentum.

Structure

The lesser omentum is divided into two ligaments: the hepatogastric ligament and the hepatoduodenal ligament. The hepatogastric ligament connects the liver to the lesser curvature of the stomach, while the hepatoduodenal ligament connects the liver to the duodenum.

Function

The primary function of the lesser omentum is to stabilize the position of the stomach and duodenum, and to provide a pathway for structures such as the portal vein, hepatic artery, and bile duct to reach the liver.

Related Terms

Greater omentum: A larger, more extensive fold of the peritoneum that hangs down from the stomach.
Peritoneum: The serous membrane that forms the lining of the abdominal cavity.
Hepatogastric ligament: A thin, membranous ligament that connects the liver to the lesser curvature of the stomach.
Hepatoduodenal ligament: A short, wide ligament that connects the liver to the duodenum.