The millions of tiny outgrowrths on the inner surface of small intestine are called :

Options

A. capillaries
B. buds
C. villi
D. veins

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the tiny outgrowths found on the inner surface of the small intestine.

2. **Identifying the Options**: The possible answers given are capillaries, buds, villi, and veins.

3. **Analyzing the Function of the Small Intestine**: The small intestine is a crucial part of the digestive system where the digestion of food is completed and nutrients are absorbed.

4. **Recognizing the Structure**: The inner surface of the small intestine has finger-like projections that increase the surface area for absorption.

5. **Identifying the Correct Term**: These finger-like projections are specifically known as "villi."

6. **Eliminating Incorrect Options**:
- **Capillaries**: These are part of the circulatory system and not related to the small intestine's inner surface.
- **Buds**: This term does not relate to the structure of the small intestine.
- **Veins**: Like capillaries, veins are also part of the circulatory system.

7. **Conclusion**: The correct answer is "villi," which are the tiny outgrowths on the inner surface of the small intestine.

**Final Answer**: The millions of tiny outgrowths on the inner surface of the small intestine are called **villi**.

---