Villi are tiny, hair-like projections and tissues composed of the cells lining your small intestine's inside walls. They serve a critical role in digestion, absorbing nutrients from food and ...

You may think of the small intestine as a smooth tube that winds its ... Nutrients are absorbed through a membrane on the inside of the intestinal wall. Villi can absorb nutrients through their tops, ...

It is always fascinating. DR CHRIS VAN TULLEKEN:What you couldn't see is that inside the small intestine are tiny villi, which are finger like projections which increase the surface area ...