The glands and intestinal villi are covered by epithelium, which contains multiple types of cells: enterocytes (absorbing water and electrolytes), goblet cells (secreting mucus), enteroendocrine cells (secreting hormones), cup cells, tuft cells, and at the base of the gland, Paneth cells (secreting anti-microbial peptides) and stem cells.
The glands and intestinal villi are lined with epithelium, which includes various cell types: absorptive cells that absorb water and electrolytes, goblet cells that secrete mucus, endocrine cells that produce hormones, cup cells, tuft cells, and at the base of the gland, Paneth cells that release antimicrobial peptides, and stem cells.