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Digestion of food takes place under the influence of a number of substances - enzymes contained in the discharge of juice in the alimentary canal several major glands. In the mouth open ducts of the salivary glands, they emit saliva moistens the mouth and food, it contributes to the mixing and the formation of food bolus. Also, the participation of enzymes amylase and maltase saliva in the mouth begins the digestion of carbohydrates. In the small intestine, namely the duodenum, pancreatic juice stand and golden yellow secret liver - bile. Pancreatic juice contains bicarbonate and a number of enzymes such as trypsin, chymotrypsin, lipase, pancreatic amylase, and nucleases. Bile, before you get into the intestine, stored in the gall bladder. Enzymes bile divide fats into small droplets, which accelerates the decomposition of lipase. In the oral cavity by means of teeth, tongue and the salivary glands during mastication occurs pretreatment food consisting in its grinding, stirring, and wetting saliva.
Thereafter, the food in the process of swallowing a bolus enters the esophagus to the stomach, where a further of its chemical and machining. In the stomach, food is stored, mixed with gastric juices containing acid, and enzymes break down proteins.
Further, food (in the form of chyme) enters the small portions of the small intestine, where a further chemical treatment of bile, pancreatic and intestinal secrets glands. Here comes the main and absorption into the blood stream of nutrients.
Nevsosavsheysya food particles moving further into the large intestine, where they are further digested by the bacteria. In the colon, water is sucked, and the formation of feces and undigested food nevsosavsheysya residues are removed from the body during a bowel movement.
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