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Digestive System oesophagus Food is pushed down this pipe into the stomach stomach The food is squashed by muscular contractions and acid is added. Proteins start to be digested by enzymes duodenum Small intestine Large intestine Rectum Anus In the duodenum digestive juices from the pancreas are added and bile which is made in the liver is also added. The enzymes help to break the food into smaller particles. The bile helps to neutralize the acid from the stomach and also helps to break the fat into little droplets. Gall bladder stores bile In the small intestine the enzymes help to break the food up into smaller particles. Proteins ----- amino acids Carbohydrates ------ glucose Fats ---- fatty acids and glycerol The tiny particles are then absorbed into the blood stream. The particles diffuse into the blood and are carried all round the body. In the large intestine the water that is needed is taken back into the blood. Food is now all digested. The solid waste or faeces is stored in this part of the large intestine or rectum before passing out the body through the anus. Anus – the solid waste passes out of the body through this special muscular part SUMMARY • Food is chewed to make digestion easier. • The stomach starts to digest the food and makes it into a liquid. • The small intestine finishes digesting the food and the tiny dissolved food particles move into the blood. • Undigested food passes out through the large intestine.