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.
[IB Biology SL: Digestion] The Villi: Structure vs. Function. The villi are small finger-like projections of the wall of the small intestine which extend into the lumen or interior space of the small intestine. As digestion is completed in the small intestine, the villi are then bathed in a fluid which contains the nutrient subunits the cells need. These subunits include monosaccharides, amino acids, nucleic acids, glycerol and fatty acids.