submucosa is thickest in ...1] stomach 2] oesophagus 3] intsestine 4] rectum Share with your friends Share 0 munmunbhatele... answered this stomach -2 View Full Answer Saisusmita answered this rectum -2 Saisusmita answered this rectum -2 Saisusmita answered this rectum -1 Prasad answered this Stomach -3