How is food absorbed into the blood?

Food is masticated and broken down, to increase its surface area, in the mouth. Particularly, starch is broken down by the enzyme amylase. An enzyme is a biological catalyst that has an active site and is complementary to one or a small group of molecules. In the case of food digestion, enzymes break down large insoluble molecules into smaller sub units that are soluble to be absorbed into the blood.Further from this the broken down food enters the stomach . Here HCL provide the optimism ph for protease, particularly trypsin to break down proteins into amino acids. The food then enters the duodenum (small intensive) exerts the pancreases and meets with NaHCO3 which helps neutralise the acidity . This is produced in the pancreases along with further protease, carbohydrate and lipase enzymes that cannot work at such acidic pH's. Bile is also related along the bile duct and helps emulsify lipids.
Once broken down food is slowly absorbed in the small intestine by villi- projections on the wall that have a large surface area.Undigested food or excess water passes along the large intestine and is stored in the anus.