Which of the following vessel in rabbit starts with capillaries and ends in capillaries
Which one of the following vein breaks up into capillaries

Options

A. Pulmonary artery
B. Renal vein
C. Hepatic portal vein
D. Renal artery

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks which vessel in a rabbit starts with capillaries and ends in capillaries, and which vein breaks up into capillaries.

2. **Identifying the Vessel**: In mammals, including rabbits, the only vessel that starts and ends with capillaries is the **portal vein**. This is because portal veins connect two capillary beds.

3. **Identifying the Vein that Breaks up into Capillaries**: The vein that breaks up into capillaries is known as a **portal vein**. In this context, the **hepatic portal vein** is the specific vein that transports blood from the gastrointestinal tract and spleen to the liver, where it breaks up into capillaries.

4. **Conclusion**: Therefore, the answer to the question is:
- The vessel that starts with capillaries and ends in capillaries is the **portal vein**.
- The vein that breaks up into capillaries is the **hepatic portal vein**.