Absorption

 
 
9.3 Absorption
 
Adaptive characteristic of villi
 
  • Have a very thin wall (one cell thick) that diffusion of food molecule occurs rapidly.
  • Have a large surface area (Many folds on internal surface and microvilli).
  • Have a dense network of blood capillaries (Efficient transport of food molecules).
  • Epithelial cells have a high number of mitochondria(provide energy in nutrient transport).
  • Lacteal is for fatty acid and glycerol absorption.

Absorption

 
 
9.3 Absorption
 
Adaptive characteristic of villi
 
  • Have a very thin wall (one cell thick) that diffusion of food molecule occurs rapidly.
  • Have a large surface area (Many folds on internal surface and microvilli).
  • Have a dense network of blood capillaries (Efficient transport of food molecules).
  • Epithelial cells have a high number of mitochondria(provide energy in nutrient transport).
  • Lacteal is for fatty acid and glycerol absorption.