This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Spleen, Subject name: Anatomy
[{'content': 'Spleen is derived from - \nSelect and explain. \nA. Ventral mesogastrium, B. Dorsal mesogastrium, C. Septum transversorium, D. Allantois', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Dorsal mesogastrium o Spleen develops as a collection of mesenchymal cells in the dorsal mesogastrium.o Initially the splenic tissue is arranges as a number of lobules which later join together to form a single spleen. The notches in the superior border of adult spleen are representatives of growth that separated the lobules during fetal period.", 'role': 'assistant'}]