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Other Terms: Omentum majus, Grand omentum
The greater omentum is the largest of all the peritoneal folds. It is suspended from the greater curvature of the stomach and the free border of the transverse colon. It usually covers the small intestine as far as the pelvis, extending almost to the summit of the bladder. It consists of a double descending and a double ascending layer. Between these layers is a large part of the omental bursa which is sometimes called the cavity of the greater omentum. The layers are usually adherent, so the greater part of the cavity is obliterated. Between the two layers of the anterior layer of the greater omentum, along the greater curvature of the stomach, is the arterial loop formed by the anastomosis between the right and left gastroepiploic arteries. In corpulent people the greater omentum contains a large quantity of fat. In thin people, the greater omentum is thin and translucent. In the infant at birth it is quite short, scarcely extending to the umbilicus. The length of the greater omentum varies. Sometimes it is short and crumpled up. At other times, it extends into the pelvis The greater omentum connects the greater curvature of the stomach with the transverse colon.