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.