GENERAL HISTOLOGY

Detailed explanation-1: -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.

Detailed explanation-2: -The main function of simple columnar epithelial cells are protection. For example, the epithelium in the stomach and digestive tract provides an impermeable barrier against any bacteria that could be ingested but is permeable to any necessary ions. This function is especially important in the colon.

Detailed explanation-3: -Simple columnar epithelium is a single layer of columnar epithelial cells which are tall and slender with oval-shaped nuclei located in the basal region, attached to the basement membrane. In humans, simple columnar epithelium lines most organs of the digestive tract including the stomach, and intestines.

Detailed explanation-4: -it absorbs nutrients from the lumen of the intestine. Simple columnar.

Detailed explanation-5: -Simple columnar epithelium is especially adapted to absorption of substances because of the cell surface characteristic called microvilli. These microvilli are tiny finger-like structures, which increase the surface area of the cell, thus allowing for more efficient absorption.