Lesser Omentum - Attachment, Ligaments & Contents | Anatomy Tutorial

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The lesser omentum is the double layer of peritoneum that extends from the inferior surface of liver to the lesser curvature of the stomach and the first part of the duodenum.
At the level of liver it is attached to the margins of fissure for ligamentum venosum and porta hepatis.
The part of lesser omentum between stomach and liver is called hepatogastric ligament, and the part between duodenum and liver is called hepatoduodenal ligament.
Between the layers of the lesser omentum, where they are attached to the stomach, run the right and left gastric arteries, as well as the gastric veins and branches from the anterior vagal trunk.
Along the right free margin of lesser omentum or more exactly along the two layers of hepatoduodenal ligament runs the portal triad composed of the common bile duct , the hepatic artery proper , and placed posterior to the duct and the artery, the portal vein.
Keep in mind that the right free margin of lesser omentum where the anterior and posterior layers of peritoneum become continuous to contain the portal triad, forms the anterior boundary of the foramen epiploicum of Winslow which provides access to omental bursa.

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