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.
enterocytes), and the mucosal surface of each of these cells is folded even further into microvilli. The combined folds, villi, and microvilli in the small intestine increase its surface area 600 times beyond that of a simple tube (Fig. 3-13). villi (singular, villus) The Â±ngerlike protrusions into the small intestine that participate in digestion and absorption of food. absorptive cells Also known as enterocytes; intestinal cells that line the villi and participate in nutrient absorption. microvilli Extensive folds on the muscosal surface of the absorptive cells.