Digestive system
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Digestive system

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Digestive system Digestive system Presentation Transcript

  • The Digestive SystemHow do we get from this……to this?
  • The Digestive Systemoesophagus(gullet, orfood pipe)stomachsmall intestinelarge intestineanus
  • The Digestive SystemEach part has a different job to do:The mouth contains teeth.These chew the food andbreak it into smallerpieces.The tongue pushes food tothe back of the mouth soyou can swallow it. View slide
  • The Digestive SystemThe oesophagus, or foodpipe, joins the mouth andthe stomach.Food is squeezed along thistube into the stomach. View slide
  • The Digestive SystemThe stomach is a bag ofacid.The acid in the stomach,and special chemicalscalled enzymes break downthe food even more.
  • The Digestive SystemThe small intestine is6-7 metres long.In the small intestine,the broken down foodgets into the blood sothe body can use it.
  • The Digestive SystemThe large intestine isabout 1.5 metres long.In the large intestine,the body absorbs a lotof water back from thedigested food.
  • The Digestive SystemAt the end of thedigestive system, theleft over stuff thatthe body can’t useleaves the bodythrough the anus whenyou go to the toilet.