2.31 Villi structure and function

Explain how the structure of a villus helps absorption of the products of digestion in the small intestine

Screen_shot_2011-10-24_at_10
Screen_shot_2011-10-24_at_10


  • 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

About