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: Unknown
[{'content': 'Which of the following structure develops from dorsal mesentery? \nSelect and explain. \nA. Greater omentum, B. Lesser omentum, C. Liver, D. Diaphragm', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ref. Gray’s anatomy.\xa0 41st edition. Page. 1130\nMesenteries of the gut tube\xa0\n\nThe thoracic esophagus and anus are anchored within the body wall and are therefore\xa0retroperitoneal\nThe stomach and liver are suspended in a mesentery that is attached to the dorsal AND ventral body walls:\n\t\nthe\xa0dorsal mesentery of the stomach\xa0becomes the\xa0greater omentum\nthe\xa0ventral mesentery of the liver\xa0becomes the\xa0falciform ligament\nthe\xa0mesentery between the stomach and liver\xa0becomes the\xa0lesser omentum\n\n\nThe rest of the GI tract is suspended by a dorsal mesentery, named according to the organ to which it is attached (mesoduodenum, mesoappendix, mesocolon, etc.)\nLittle of GI tract remain\xa0intraperitoneal\xa0in the adult and are therefore suspended by a mesentery.\nLittle of GI tract, however, are applied against the body wall during development and the dorsal mesentery becomes incorporated into the body wall, making the organ\xa0secondarily retroperitoneal.', 'role': 'assistant'}]