Question

Epithelial cells involved in absorption of digested food have l on their free surface

Answer 1

The function of the plicae circulares, the villi, and the microvilli is to increase the amount of surface area available for the absorption of nutrients. ... The epithelial cells of the villi transport nutrients from the lumen of the intestine into these capillaries ( amino acids and carbohydrates) and lacteals (lipids).

Answer 2

hi mate,

=> The Epithelial cells involved in absorption of digested food have 'microvilli' on their free surface. Most of the absorption of the digested food takes place in the small intestine.

=> ... These cells have the free surface facing the lumen of the small intestine which is also called as the apical surface.

i hope it helps you.