Question

After observing the model of the lumen of human intestine your friend said that “the villi projected into the lumen actually block the movement of food through the intestine, if the villi are absent food can easily pass through the intestine.” How will you respond to this comment?

Answer 1

Villi actually decrease the movement of chyme. The function of villi is to increase the surface area of the intestine for the absorption of digested nutrients.