Omentum: The omentum refers to

The omentum refers to a sheet-like fatty tissue layer created by folds of the peritoneum that is attached to the stomach and other abdominal organs. It encloses nerves, blood vessels, and lymphatics and contains fatty and connective tissue. Besides fat storage, the omentum is also known to have an important role in immune regulation and tissue regeneration processes. 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 greater omentum is a large fold of peritoneum that hangs from the stomach and covers the intestines. It has various subdivisions, blood supply, development, functions and clinical significance. What Is the Omentum and Why Is It Important in Biology? The omentum is an important part of the human digestive system that is located in the lower abdominal section. There are two different layers of fatty tissue that create the omentum.