abnormal enteric nervous system morphology abnormal myenteric nerve plexus morphology 2011-02-09T12:25:21Z MP:0010801 MPheno.ontology abnormal Auerbach plexus morphology any structural anomaly of the plexus of unmyelinated nerve fibers and postganglionic autonomic cell bodies lying in the muscular coat of the esophagus, stomach and intestines that communicate with the submucosal, subserosal and enteric plexuses csmith