<prompt> Meckels diveiculum is a derivative ofAllantoic diveiculumOmphalo-mesenteric ductVentral mesogastriumDuctus aeriosus  <response>: Meckels diveiculum: Midgut diveiculum attaching to developing gut tube is called vitelline duct vitello-intestinal duct. It is also known as omphalomesenteric tube antimesenteric towards ant abdominal wall Normally, it is content of umbilical cord it is obliterated If it is not obliterated, it results is an anomaly called Meckels diveiculum There is an hindgut diveiculum called allantois which is also a content of umbilical cord. If allantois is not obliterated, it results in urachal fistula where urine comes out of umbilicus If fecal matter meconium is at umbilicus of baby then it is Meckels anomaly. 