THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -Similar to the small intestine, the function of the epithelium of the large intestine is absorption. Lined by a simple columnar epithelium arranged as crypts but lacking villi, these epithelial cells primarily absorb water and electrolytes (Figure 1) (Jeejeebhoy, 2002).

Detailed explanation-2: -Columnar epithelium covers the intestinal tract from the end of the esophagus to the beginning of the rectum. It also lines the ducts of many glands. A typical form covers the villi (nipple-like projections) of the small intestine.

Detailed explanation-3: -Enterocytes are the major cell type in intestinal epithelium. They are simple columnar epithelial cells and play important roles in nutrient absorption (e.g., ions, water, sugar, peptides, and lipids) and in secreting immunoglobulins.