What are villi? Where villi located? What is the function of villi?

Explanation

**Step-by-Step Solution:**

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

2. **Location of Villi**: Villi are located on the inner lining of the small intestine, which is a crucial part of the alimentary canal where digestion and absorption of nutrients occur.

3. **Function of Villi**: The primary function of villi is to increase the surface area of the small intestine. This increased surface area allows for more efficient absorption of digested food and nutrients into the bloodstream.

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