This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thorax, Subject name: Anatomy
[{'content': 'Which of the following does not contribute to the development of diaphragm? \nSelect and explain. \nA. Septum transversum, B. Pleuroperitoneal folds, C. Body wall, D. Septum primum', 'role': 'user'}, {'content': "Answer: D \nExplanation: Diaphragm develops from the following sources. 1.Septum transversum forms the central tendon. 2.Pleuroperitoneal membranes form the dorsal paired poion. 3. Lateral thoracic wall contributes to the circumferential poion of the diaphragm. 4. Dorsal mesentry of esophagus forms the dorsal unpaired poion. Ref.B D Chaurasia's human anatomy vol.2", 'role': 'assistant'}]