Oct 24
2.31 Villi structure and function
Explain how the structure of a villus helps absorption of the products of digestion in the small intestine
- The whole inside wall of the small intestine is folded ( it is folded to increase surface area)
- The structure in the Villi is called the lacteal
- The Villi is surrounded by glucose molecules amino acid molecules and fatty acids
- In the space around the Villi the space is in high concentration.
- The Villi increases the surface area for absorption,and it also has a small diffusion distance(occurs fasst)
- The concentration gradient of the Vili is maintained by blood flow
