<prompt> Brunners glands are seen in -JejunumUpper duodenumLower duodenumAppendix  <response>: B i.e., Upper duodenum The presence of mucous duodenal Brunners glands in the submucosa is indicative of upper duodenumQ. These submucosal glands are absent in the jejunum, ileum the entire large intestine.The histology of lower duodenum, jejunum, and ileum remains similar to that of the upper duodenum. The only differences are.- duodenal glands of Brunner are limited to upper pa of duodenumQ- large aggregates of lymphatic nodules Peyers patches are observed in lower regions of ileumQ 