This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': "Meckel's diveiculum is a remnant of ? \nSelect and explain. \nA. Stenson's duct, B. Wolffian duct, C. Mullerian duct, D. Vitellointestinal duct", 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Vitellointestinal duct Meckel's diveiculum Meckel's diveiculum is the persistent proximal pa of the vitellointestinal duct which normally disappears during intrauterine life. It follows 'rule of 2' :- present in 2% subjects, 2 inches (5 cm) long and is situated 2 feet (60 cm) proximal to ileocoecal valve. It is attached to antimesenteric border of ileum. Its calibre is equal to that of the ileum. Its apex may be free or attached to umblicus or mesentery by a fibrous band. o Vitellointestinal duct posseses all three coats of intestinal wall.", 'role': 'assistant'}]