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The diagram shows the human digestive system - Edexcel - GCSE Biology - Question 6 - 2017 - Paper 1
Question 6
The diagram shows the human digestive system. (a) (i) Complete the sentence by putting a cross (✗) in the box next to your answer. Amylase begins the breakdown of ... show full transcript
Worked Solution & Example Answer:The diagram shows the human digestive system - Edexcel - GCSE Biology - Question 6 - 2017 - Paper 1
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Describe the functions of the small intestine in the digestive system.
Answer
The small intestine performs several key functions:
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Digestion: The small intestine continues the digestion of nutrients using enzymes produced by the pancreas and bile from the liver. This helps break down food molecules into smaller components.
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Absorption: Nutrients such as amino acids, fatty acids, and simple sugars are absorbed through the intestinal walls into the bloodstream. This absorption occurs mainly through the villi, which increase the surface area for absorption.
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Transport: The small intestine pushes food along through a process called peristalsis, allowing for efficient digestion and absorption.