BI-1764
The digestive system
Biology · Secondary 4 · Easy · The digestive system
A villus in the small intestine absorbs digested food. Which feature of a villus allows rapid absorption into the blood capillaries?
- A single layer of epithelial cells forming a thin wall
- A thick layer of smooth muscle around each villus
- A tough waterproof covering that prevents water loss
- Large stores of starch granules inside villus cells
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