Greater omentum The greater omentum is part of the dorsal mesentery, is a large apron-like fold of peritoneum with a free lower border that attaches to the greater curvature of the stomach and the first part of the duodenum. The greater omentum is the longest peritoneal fold, it drapes over the transverse colon and coils of the jejunum and ileum like a “fatty apron”. The greater omentum is a double sheet that folds back on itself, giving it a total of four layers. Hanging behind the ... The omentum appears to be a primary site of B-lymphocyte development [19, 20]. In experimental animals, the omentum is a source of unique B-lymphocytes that demonstrate specific surface markers. These B-lymphocytes are predominantly CD5+ (Lyl+), and are common in not only the omentum but also the peritoneum. The omentum is a large, fat-filled layer of the peritoneum that covers the organs in the abdomen. Let us know more details in this article. Learn about the omenta, the fused peritoneal folds that connect the stomach and duodenum with other abdominal organs. Find out their structure, location, vasculature, function and embryology.
