iGCSE Biology - 7.2 Digestive system

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This powerpoint is purposefully made for iGCSE Biology students using the most recent Cambridge syllabus.

It covers the following criteria - 7.2 Digestive system

Core

1. Identify in diagrams and images the main organs of the digestive system, limited to:
   (a) alimentary canal: mouth, oesophagus, stomach, small intestine (duodenum and ileum) and large intestine (colon, rectum, anus)
   (b) associated organs: salivary glands, pancreas, liver and gall bladder

2. Describe the functions of the organs of the digestive system listed in 7.2.1, in relation to:
   (a) ingestion – the taking of substances, e.g. food and drink, into the body
   (b) digestion – the breakdown of food
   © absorption – the movement of nutrients from the intestines into the blood
   (d) assimilation – uptake and use of nutrients by cells
   (e) egestion – the removal of undigested food from the body as faeces