1. 
   Upper digestive system
   The upper parts of the digestive tract – that is the mouth, oesophagus (gullet) and the stomach. These parts of the digestive system are responsible for the initial stages of digestion. This includes both physically breaking down the food by chewing and churning of the stomach contents, as we...
   Found op http://www.encyclo.co.uk/local/20560
   
   

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