The villi and microvilli on the villi considerately increase the S.A for absorption on the epithelial lining of the s.intestine. On the other side of the epithelial cells is a rich network of blood capillaries.
They are efficient and adapted for the absorption of the products of digestion (such as glucose) because they:
They are efficient and adapted for the absorption of the products of digestion (such as glucose) because they:
- increase the S.A for DIFFUSION
- v.thin walled, reducing the diffusion PATHWAY