<prompt> Right crus of diaphragm is derived from?Septum transversumPleuroperitoneal membranesDorsal mesentery of the esophagusBody wall  <response>: Development Septum tranversum forms the central tendon Pleuroperitoneal membranes form the dorsal paired poion Lateral thoracic wall contribute to the circumferential poion of the diaphragm Dorsal mesentery of oesophagus forms the dorsal unpaired poion BD CHOURASYAS HUMAN ANATOMY VOLUME 2page no:334 