Answer:
Epithelial.
Explanation:
Intestine epithelial is known as the single cell layer which helps in the formation of the luminal lining of the large and small intestines of the gastrointestinal tract. It is made up of simple columnar epithelial cells. Two important known function of the epithelial cell is :
1) Absorbing necessary substances in the body such as nutrients.
2) Restricted the entry of substances which is harmful for our body.
As the nature of its protective role, the intestinal epithelium helps in the formation of important component of the intestinal mucosal barrier.
