Which of the following structures are not involved in development of diaphragm?: (A) Somatic body wall, (B) Septum transversum, (C) Pleuroperitoneal membrane, (D) Pleuropericardial membrane
Answer is D. 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).