In this A level, IB Biology video Hazel talks you through the structure of the digestive as well as its various functions. The following are described: the mouth (amylase, chemical digestion and physical digestion), the oesophagus (peristalsis), the stomach (hydrochloric acid, protease), the small intestine, the liver (bile), gall bladder, pancreas, rectum (storage of faeces), and anus (egestion of faeces).

These videos are designed to help with your A level and IB science revision.

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Hazel completed her undergraduate degree at St John's College, the University of Cambridge. She then did a PGCE (Post-Graduate Certificate of Education) before qualifying as a science teacher. She now works full time as a professional tutor.

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