Submucosal glands are present in the following pa of gastro intestinal tract?
The major distinguishing feature of this C-shaped first pa of the small intestine duodenum is the presence of duodenal (Brunner's) glands in the submucosa. The mucous cells of these glands produce an alkaline secretion (pH 8.1-9.3) that enters the lumen through the crypts. It protects the duodenal lining from the acidity of the chyme and raises the luminal pH to optimize pancreatic enzyme activity.
Duodenum
Colon
Anal canal
Stomach