2.31 describe the structure of a villus and explain how this helps absorption of the products of digestion in the small intestine

The small intestine is adapted for absorption of food as it is very long and also has a large surface area because its walls are covered in tiny projections called villi. Each cell on the surface of a villus also has its own tiny villus, known as micro-villi, these increase he surface area even more.

Villi have a single permeable layer of surface cells and a very good blood supply to assist with quick absorption.