It causes premature ageing of the skin by a process called glycation. This is where excess sugar in the blood attaches itself to lipids, nucleic acids and proteins (especially your collagen) to form âadvanced glycation end Â­productsâ or AGEs, which accelerate the ageing process and so cause wrinkly skin.
What is the role of villi in digestive system? the role of the villi is that it increases the surface area so that when food passes through the small intestine the food will get caught on the villi and the nutrients are ab â¦ sorbed into the blood.
Report Abuse. Villi are tiny ridge formations on the inner wall of the small intestine. Their main function is to absorb nutrient out of the food that is passing through. The villi are further covered by microvilli, which are microscopic ridges, much the same as villi are to intestine, that form on top of the villi themselves.