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Structure and function
 * 1) a. __Pancreas:__ produces 1.3L of pancreatic juices everyday
 * 2) b. __Stomach:__ J-shaped organ with a captivity of about 2L and mixes and churns food
 * 3) c. __Teeth:__ cuts and grinds food into smaller easier to swallow bits
 * 4) d. __Large intestine:__ stores faeces
 * 5) e. __Liver:__ produces chemicals, such as bile and weighs 1.5kg. it is the largest organ
 * 6) f. __Tongue:__ helps taste and swallow
 * 7) g. __Salivary glands:__ produces saliva
 * 8) h. __Gall bladder:__ stores 50mL of bile produced form the liver
 * 9) i. __Small intestine:__ absorbs water
 * 10) j. __Oesophagus:__ pushes food to stomach


 * Definition of chemical and mechanical digestion **

Chemical digestion
It is the breaking down of food particles by saliva which contains enzymes, stomach digestive juices, duodenum, bile and fat enzyme. All these things do is break down the food into smaller easier parts to absorb of take out as waste.

Mechanical digestion
It is the breaking down of food by physical acts like chewing and the squeezing of organs. They also help break down the food into smaller easier parts to absorb of take out as waste.