Fill in the following blanks with suitable words :
Arteries and veins are joined by a network of …......................

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks us to fill in the blank regarding the connection between arteries and veins. We need to identify the type of blood vessels that connect these two.

2. **Identifying Blood Vessels**: We know that arteries carry oxygenated blood away from the heart, while veins carry deoxygenated blood back to the heart.

3. **Connecting Arteries and Veins**: To understand how arteries and veins are connected, we need to think about the smaller blood vessels that facilitate the exchange of gases, nutrients, and waste products between blood and tissues.

4. **Recognizing the Network**: The blood vessels that connect arteries and veins are called capillaries. These are tiny blood vessels that form a network throughout the body, allowing for the exchange of substances between blood and tissues.

5. **Filling in the Blank**: Based on the understanding that capillaries connect arteries and veins, we can fill in the blank: "Arteries and veins are joined by a network of **capillaries**."

**Final Answer**: Arteries and veins are joined by a network of **capillaries**.

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