The gastroepiploic vein is actually a pair of veins located near the human stomach. These veins drain the greater curvature of the stomach, and the greater omentum. They are also known as the gastro-omental right and left, or the gastroepiploic right and left. Collectively, they are known as the gastroepiploic vein. The tributaries to the gastroepiploic vein are the gastric branches and the omental branches. The left gastroepiploic vein drains into the splenic vein, and the right gastroepiploic vein drains into the superior mesenteric vein. The gastroepiploic vein has a corresponding artery that supplies the stomach and part of the esophagus; this is the gastroepiploic artery. The gastroepiploic vein is involved in circulation to and from the stomach and part of the esophagus. It removes carbon dioxide from the supplied cells and returns the carbon dioxide to the lungs, to leave the body via gas exchange. As they have highly similar roles and locations, the gastroepiploic right and left veins are usually referred to collectively, not separately.
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In Depth: Gastroepiploic vein