How the small intestine is protected from the erosive effect of the stomach acid. Introduction: The small intestine lies between the stomach and the large intestine. The small intestine consists of three parts: the jejunum, the duodenum, and the ileum. It aids in the digestion and absorption of ingested food. The tissue layers of the small intestine are similar to the layers of the esophagus and the stomach. Simple columnar epithelial cells line the lumen. The externa possesses a thick circular layer inside. The jejunum and ileum are covered with serosa on all sides. However in the case of duodenal serosa, it is seen only on the anterior surface.

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Chapter 25.5, Problem 2AYLO

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How the small intestine is protected from the erosive effect of the stomach acid.

Introduction:

The small intestine lies between the stomach and the large intestine. The small intestine consists of three parts: the jejunum, the duodenum, and the ileum. It aids in the digestion and absorption of ingested food. The tissue layers of the small intestine are similar to the layers of the esophagus and the stomach. Simple columnar epithelial cells line the lumen. The externa possesses a thick circular layer inside. The jejunum and ileum are covered with serosa on all sides. However in the case of duodenal serosa, it is seen only on the anterior surface.

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