phenotype affects entity abnormal intestinal mucosa morphology abnormal duodenum morphology abnormal Brunner's gland morphology abnormal gland of Brunner morphology abnormal glandula duodenales Brunneri morphology any structural anomaly of the branched acinotubular glands found in the submucosa of the duodenum located above the Sphincter of Oddi; their main function is to produce a mucus-rich alkaline secretion (containing bicarbonate) to protect the duodenum from the acidic content of chyme, provide an alkaline condition for the intestinal enzymes to be active (thus enabling absorption to take place), and lubricate the intestinal walls; they also secrete urogastrone, which inhibits parietal and chief cells of the stomach from secreting acid and their digestive enzymes csmith abnormal glandula duodenales morphology MP:0012518 2014-01-01T16:43:17Z MPheno.ontology abnormal duodenal gland morphology abnormal submucosal gland morphology duodenal gland duodenal gland morphology phenotype