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Conditions and Diseases
Intestines

What is the purpose of all the folds of the intestinal lining?

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November 26, 2008 1:19PM

The intestinal lining is where the absorption of nutrients from food takes place. In order to be efficient the intestinal lining needs as large a surface area as possible and this can be done by folding (for an example, get a piece of paper and fold it up into a concertina, this is the same surface area but reduced length, exactly what happens in the intestinal wall)