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Kevinfood

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  • 1. 1 Food And Digestion • Some food comes from animals, like milk. • Others, comes from plants like fruit and bread. • We also need water and salt , that do not come from plants or animals.
  • 2. 2 Food groups • We classify food into five groups: 1. Grains gives us energy. 2. Vegetables gives us vitamines. 3. Fruit gives us vitamines to be healthy. .
  • 3. 3 4. Milk gives us calcium to grow and have strong bones. 5. Meat, fish and beans give us proteins to have strong muscles A healthy diet • Our diet is made up of the things that we eat and drink. • We need to eat from all the groups to stay healthy, this is a balanced diet.
  • 4. 4 THE DIGESTIVE SYSTEM - The digestive system is made of following organs: the mouth, oesophagus, stomach, intestines and anus. - Food enters our body through our mouth. - Our oesophagus is a tube between the mouth and stomach.
  • 5. 5 - Our stomach is like a bag. - Our intestine is a long tube, made up of small intestine and large intestine. THE STAGES OF DIGESTION • 1.Digestion begins in the mouth . - Our theeth catch and chew the food. - Our tongue mixes the food with saliva. - Then the food goes down the esophagus and into the stomach.
  • 6. 6 • 2. In the stomach food is mixed with a liquid (gastric juice). 3. In the small intestine: • - the food is dividided into the sustances our body need. • - all the useful parts of food go from our small intestine into the blood.
  • 7. 7 4. Large intestine • Parts we cannot use go into the large intestine. • They are transformed into faeces and expelled through the anus. • Digestion takes time (about 2 hours) • So we need to wait before swimming or running.