2.26 The human alimentary canal

recongnise the structure of the human alimentary canal and describe outline the functions of the mouth oesonhagus stomach, small intestine, large intestine and pancreas

DIGESTIVE SYSTEM


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ood is introduced by ingestion. The teeth breaks down food, as the mucus is used for lubrication so it can slide down the digestive system. Salivary amilas is an enzyme that digest carbohydrates. The aphosogus is a tube that carries food to the stomach ( no digestion) which the food moves down the tube by peristolsis. Foos is then stored in the stomach. In the stomach there is an acid which kills bacteria, also there is a group of enzymes called proteases which is a digestion of the protien. As the food passes the stomach it goes to the small intestines. In addition from the pancreas of the digestive enzyme these enzyme complete the break down of the food so then it can be absorbed in to small parts ( small intestines abosorb blood)

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