Previously, we discussed the absorption of carbohydrates by the cells of the small intestine. Now let's focus on the absorption of proteins, biontericides the cells found in the small intestine. Now, let's begin by recalling the pathway by which we actually digest our proteins. So when we eat the proteins, when the proteins into the oral cavity of our mouth, we begin the process of mechanical digestion. That simply means we increase the surface area of the protein by breaking down our food. Now, mechanical digestion does not mean chemically breaking our bonds.