<prompt> All are true about Brunners gland except:It lies in duodenum onlyIt lies in duodenum ileumIt secretes bicarbonate rich fluidIt secretions neutralizes acidic pH of stomach  <response>: Ans. B. It lies in duodenum ileum Brunners Gland:Sub-mucous glands are touous, long penetrate the muscularis mucosaDrains into the crypts of lieberkuhn.Numerous in first pa of duodenum duodenal cap or bulb meager below the common opening of bile pancreatic ducts.Ingestion of fatty food or secretin injection produces large volume of thick alkaline mucous secretion which probably helps to protect the duodenal mucosa from the gastric acid.In the duodenum there are in addition the small, coiled acinotubular duodenal glands Brunn ers glandsFunctions:Protects the duodenal wall from digestion by the highly acidic gastric juice emptying from the stomach.Mucus contains a large excess of bicarbonate ions, which add to the bicarbonate ions from pancreatic secretion and liver bile in neutralizing the hydrochloric acid entering the duodenum from the stomach 