The epithelial surface of the intestine plays a critical role in the protection of antimicrobial defense.
Paneth cells are the main producers of antimicrobial peptides in the intestinal tract. These cells secrete considerable quantities of α-defensin peptides, the amplest antimicrobial peptides in the human intestine.
there are no Paneth cells, which is a specialized intestinal epithelial cell type that produces antimicrobial.
So we can conclude that Small intestinal mucosa is lined by a simple circular epithelium which consists primarily of permeable cells (enterocytes), with separate goblet cells and occasional enteroendocrine cells.
Learn more about intestinal here: https://brainly.com/question/392615
#SPJ1