The enteric nervous system Myenteric plexus Circular muscle Deep muscular plexus Submucosa plexus Lond itudinal muscle SUbmucosal arter MUCOSA Muscularis mucosa21 The enteric nervous system Deep muscular plexus Submucosal artery Muscularis mucosa Submucosal plexus MUCOSA Myenteric plexus Longitudinal muscle Circular muscle