Digestive system

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  • Created by: Victoria
  • Created on: 29-12-14 05:39

Digestive System

 Digestion is the process where large insoluble molecules of food are broken down to produce small soluble molecules suitable for absorption



-       Teeth chew (mechanical digestion), make large surface area for enzymes to act on

-       Salivary glands produce saliva containing mucus to help food move easily down oesophagus

-       Amylase breaks down starch into maltose


-       Peristalsis, where circular muscles contract squeezing food forward


-       Produces gastric juice

-       Pepsin breaks down protein

-       Hydrochloric acid creating pH 2, kills bacteria and best environment for enzymes

-       Mucus to protect lining of stomach from being digested

-       Muscles in the wall of the


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