<prompt> Diaphragm develops from all except:Septum transversumDorsal mesocardiumPleuroperitoneal membraneCervical myotomes  <response>: B i.e. Dorsal mesocardium Diaphragm develops from septum transversumQ which forms central tendon of diaphragm, two pleuro-peritoneal membranesQ, dorsal mesentery of oesophagus i.e. mesoesophagus not mesocardiumQ and muscular ingrowth from somites at cervical segment 3 to 5 C3-05 of the lateral body wall cervical myototnesQMn - ST PM DMO and CM ST Prime Minister, District Medical Officer Chief Minister 