The broken-down products of fat digestion are largely absorbed into the small intestine of the digestive system, whereas carbohydrate and protein broken down products enter the small intestine of the digestive system.
Explanation:
Fat breakdown is done by lipase enzymes in the small intestine. The bile acts upon the fat making it into small droplets and increases the lipase activity. The fat is broken down into glycerol and fatty acids. Absorption of fat takes place in mucosal lining of the small intestine. These are then transported in the endoplasmic reticulum of the cell which synthesizes lipids and transport lipids from the absorbed fats.
Carbohydrate digestion starts with salivary amylase in the saliva. They are broken down into monomers in stomach and duodenum of small intestine. The monomer units as glucose are absorbed in the small intestine and stored in liver.
Protein digestion takes place in stomach and small intestine. Protease breaks protein into amino acids. Absorption of amino acid takes place in small intestine.