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.
The villi are tiny hair-like appendages which line the small intestine. They increase the surface area of the intestine, helping digestion due to their rich blood supply and s â¦ ingle-celled wall, they are able to absorb nutrients.nce the churn â¦ ed up food is in the small intestine which is covered in villus (like a brush) the microvilli on the villus, to increase the surface area further, absorb all of the soluble glucose. Inside of the villus are capillaries that absorb most of the churned up food.