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Digestive System

How does the histology of the GI tract change as you move from the esophagus to the stomach small intestine large intestine and anus?


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November 27, 2008 5:05PM

The histology changes in each segment of the GI tract, but from the esophagus to anus it has four main layers that vary according to location. They are called the mucosa, the submucosa, muscularis, and serous layers. The real difference is in the small intestine which contains plicae circulares covered with villi and microvilli for absorption of nutrients.