Answer: Plato Answer
The fingerlike shape of the villi is very important for nutrient absorption because it increases the surface area of the small intestine. In celiac disease, the villi flatten, decreasing the surface area of the small intestine. As a result, fewer nutrients get absorbed. Also, the model shows that celiac disease damages the epithelial cells of villi. The epithelial cell layer is important for the diffusion of nutrients to the capillaries. Without a healthy epithelial cell later, fewer nutrients may be absorbed, and the body may not have enough energy to perform its functions.