Question

In a histology section of the digestive tract, you observe that the mucosa is made of simple columnar epithelium and the tissue has three layers of smooth muscles. this section represents ________.

Answer 1

Out of the following given choices;

stomach

duodenum

large intestine

esophagus

The answer is duodenum. This region’s (of the gastrointestinal tract) mucosal layer is composed of three layers; epithelium, lamina propria, and muscularis mucosae. Muscularis mucosae is the layer of smooth muscle. The epithelium is composed of simple columnar cells (aka enterocytes) with a brush border and interspersed goblet cells.