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
Which of the following structures are not involved in development of diaphragm? 
Select and explain. 
A. Somatic body wall, B. Septum transversum, C. Pleuroperitoneal membrane, D. Pleuropericardial membrane
D: Pleuropericardial membrane
Answer: D: Pleuropericardial membrane 
Explanation: Ans: D. Pleuropericardial membranePleuropericardial membrane:Supradiaphragmatic structure.Not involved in formation of diaphragm.Development of Diaphragm:Septum transversum - Central tendon.Pleuroperitoneal membranes - Small intermediate muscular poione.Mesentery of esophagus - Crurae.Body wall - Peripheral muscular diaphragm.Cervical myotomes (muscular input).