<prompt> Which of the following represents the embryological origin of Meckels diveiculum?Urogenital sinusAllatoic diveiculumVitello intestinal ductNone of the above  <response>: Meckels diveiculum results from failure or incomplete obliteration of Vitello intestinal duct omphalomesentric duct. It follows the rule of 2 : 2 prevalence, 2:1 female predominance, located 2 feet proximal to the ileocecal valve in adults, 50 of symptomatic individuals are less than 2 years. Reference: Schwatzs Principles of Surgery 9e chapter 28. 