Intestinal crypts, also known as crypts of Lieberkühn, are small glandular structures located in the lining of the small intestine and large intestine. They are responsible for producing intestinal juices and secreting enzymes that aid in digestion. These crypts contain various types of cells, including enterocytes, which absorb nutrients, and goblet cells, which secrete mucus to protect the intestinal lining. The cells in intestinal crypts are continuously renewed through a process called cell turnover. Stem cells at the base of the crypts divide and differentiate into specialized cells that migrate upward to replace older cells. This regeneration is crucial for maintaining a healthy intestinal barrier and ensuring efficient nutrient absorption.