Mucous membrane of large intestine

The layer closest to the lumen

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The mucosa of the large intestine, the wall of the large intestine is divided into four layers: mucosa, submucosa, muscularis and adventitia. The mucosa of the large intestine is the layer closest to the lumen. It is composed of epithelium, lamina propria and muscularis mucosa. The mucosal surface of large intestine is smooth without villi. Epithelium is Monolayer columnar epithelium , composed of absorption cells and Goblet cell form. The lamina propria contains dense single tubular large intestine glands, including absorption cells, a large number of goblet cells, a small number of stem cells and Endocrine cell 。 The main function of the large intestine mucosa is to absorb water and form feces. The large intestine gland can secrete mucus to protect the intestinal mucosa. Solitary lymph nodes can be seen in lamina propria. The muscularis mucosa is composed of two thin layers of smooth muscle, the inner ring and the outer longitudinal.^[1]

Chinese name: Mucous membrane of large intestine
Role: Absorb water and form feces

Definition: The wall of the large intestine is divided into four layers: mucosa, submucosa, muscularis and adventitia

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