What are villi? What is their location and function?

Explanation

**Step-by-Step Solution:**

1. **Definition of Villi**: Villi are small, finger-like projections that extend from the lining of the small intestine.

2. **Location of Villi**: Villi are specifically located in the small intestine, which is part of the digestive system.

3. **Function of Villi**: The primary function of villi is to increase the surface area for the absorption of nutrients from the food we consume. Their structure allows for a greater area to absorb nutrients effectively.

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