This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small & Large Intestine, Subject name: Surgery
[{'content': 'Meckels diverticulum represents which structure of the embryonic life? \nSelect and explain. \nA. Vitellointestinal duct, B. Wolfian duct, C. Mullerian duct, D. Paramesonophric gut', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Vitellointestinal duct * Meckel's diverticulum is present in 2% of the population; it is situated on the anti-mesenteric border of the small intestine, commonly 60cm from the ileocaecal valve, and is usually 3-5 cm long. Many variations occur (2% - 2 feet - 2 inches is a useful aide-memoire). It represents the patent intestinal end of the vitellointestinal duct.", 'role': 'assistant'}]