abnormal enteric nervous system morphology abnormal myenteric nerve plexus morphology MP:0010801 abnormal Auerbach plexus morphology csmith MPheno.ontology 2011-02-09T12:25:21Z 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