BI-1848
The digestive system
Biology · Secondary 4 · Medium · The digestive system
A villus in the ileum has a very thin epithelium (one cell thick). How does this adaptation help the villus carry out its function of absorbing glucose into the blood?
- It shortens the diffusion distance, speeding up absorption.
- It increases the volume of the villus for storing glucose.
- It strengthens the villus so it does not break easily.
- It allows more muscles to attach and move the villus.
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