The diaphragm is formed of all the following except
The diaphragm is a dome-shaped muscle forming the paition between the thoraxic and abdominal cavities. It is a chief muscle of respiration. Diaphragm develops from the following sources. They are: Septum transversum forms the central tendon. Pleuroperitoneal membranes form the dorsal paired poion Lateral thoracic wall contributes to the circumferential poion of the diaphragm Dorsal mesentery of oesophagus forms the dorsal unpaired poion. Ref - medscape.com
Septum transversum
Paraxial mesoderm
Pleuroperitoneal membranes
Dorsal mesentery of oesophagus
Abdomen and pelvis