I think what you can eat is the large intestine gland. The large intestine is divided into cecum (with appendix), colon and rectum. Its main function is to absorb water and electrolyte, and form feces from food residues. The large intestine mucosa does not form annular folds and villi, so the surface is smooth; However, there are semilunar folds on the inner surface of the colon wall at the transverse sulcus between the colon bags. (1) cecum and colon 1. Mucosal epithelium is a single row, which consists of columnar cells and goblet cells, and the number of the latter is obviously more than that of the small intestine. There are a large number of large intestine glands (also called intestinal crypts) in the lamina propria, which are long and single tube. In addition to columnar cells and goblet cells, there are a few undifferentiated cells and endocrine cells, and there is no Paneth cell. There are scattered solitary lymph nodules in the lamina propria. Mucosal muscle layer is the same as small intestine.