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': 'Diaphragm develops from all except? \nSelect and explain. \nA. Septum transversum, B. Dorsal mesocardium, C. Pleuroperitoneal membrane, D. Cervical myotomes', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Development of diaphramDiaphragm develops from 4 structures derived from mesoderm which unite to form a sheet.Septum transversum :- Gives origin to sternal pa and central tendinous region.Pleuroperitoneal membrane :- Dorsal paired poion.Dorsal mesentry of oesophagus :- Gives origin to crural pa (Dorsal unpaired poion).Lateral body walls (from cervical myotome) :- Gives origin to peripheral costal poion of diaphragm.', 'role': 'assistant'}]