cell cell type (from CL) jejunal mucosa small intestine duodenum jejunum submucosa of duodenum submucosa of jejunum muscle layer of jejunum muscularis mucosae of jejunum submucous nerve plexus of small intestine Cell Type Distal part of ileum Duodenum circular/longitudinal muscle mucosa muscle true ASCTB-TEMP:muscle This term is a temporary placeholder based on expert recommendation and it is NOT in a stable version muscle CT muscularis externa muscularis mucosa myenteric plexus of auerbach submucosa submucosal plexus of meissner