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DIGESTION Physical digestion Chemical digestion Absorption Egestion Anatomy of digestive system Physical digestion Chemical digestion Digestive juices mix with food wich is transformed into nutrientes. • In the mouth, saliva breaks down the carbohydrates. • In the stomach, the gastric juices mix with the bolus of food and they form a partially digested food paste called chyme. • In the small intestine, thanks to the intestinal juices, the bile and the pancreatic juice, the digestion of food is completed. It forms a paste, calles chyle, which contains nutrients. Chemical digestion of carbohydrates Chemical digestion of Lipids (Fats) Chemical digestion of proteins Nutrients absorption and egestion • The walls of the intestine contain veins and capillaries which absorb the nutrients into the bloodstream. • In the large intestine, water is extracted from the residues which form faeces. These are excreted through the anus.
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