Diaphragm develops from -: (A) Ectoderm, (B) Mesoderm, (C) Endoderm, (D) Neuroectoderm
Answer is B. Ans. is 'b'i.e., Mesoderm Development of diaphramo Diaphragm develops from 4 structures derived from mesoderm which unite to form a sheet.1) Septum transversum:- Gives origin to sternal part and central tendinous region.2) Pleuroperitoneal membrane:- Dorsal paired portion.3) Dorsal mesentry of oesophagus:- Gives origin to crural part (Dorsal unpaired portion).4) Lateral body walls (from cervical myotome):- Gives origin to peripheral costal portion of diaphragm.