part of part of develops from develops from visceral peritoneum lesser omentum http://upload.wikimedia.org/wikipedia/commons/c/cf/Gray984.png EHDAA2:0000991 omentum minus MA:0001623 A membranous extension of the peritoneum from the peritoneal layers covering the ventral and the dorsal surfaces of the stomach and the first part of the duodenum. The lesser omentum extends from the portal fissure of the liver to the diaphragm, where the layers separate to enclose the end of the esophagus. It also forms two ligaments, one associated with the liver, the hepatogastric ligament, and the other, the heptatoduodenal ligament, with the duodenum. [TFD][VHOG] UMLS:C0230260 FMA:9715 small omentum gastrohepatic omentum EHDAA:4858 The double layer of peritoneum that extends from the liver to the lesser curvature of the stomach and the start of the duodenum. [WP,unvetted]. Wikipedia:Lesser_omentum EDITOR_NOTE exact part of and develops from relationships need to be established SCTID:362712005 UBERON:0002399 EMAPA:17890 EV:0100086 VHOG:0000357 NCIT:C32981 omentum mesoderm-derived structure ventral mesogastrium zone of stomach