abnormal smooth muscle morphology abnormal stomach muscularis externa morphology 2011-02-08T11:01:17Z MP:0010779 MPheno.ontology abnormal gastric muscularis morphology abnormal gastric smooth muscle morphology abnormal muscularis externa morphology abnormal stomach smooth muscle morphology any structural anomaly of the smooth muscle layer of the stomach wall that functions to churn and mix food and gastric secretions as well as to move food along the digestive tract to the intestines csmith abnormal stomach wall morphology