The purpouse of the Crypts of Lieberkuhn are to generate cells
division, to replace those at the tip of the villi
in the small intestine
. The villi constantly have cells removed by the friction
rubbing against them, and between 50 and 200 grams of small intestine are lost every day through faeces
Cells produced in the Crypts of Lieberkuhn migrate
up the villi to reform parts of them at the tip.