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

To solve the question regarding which vessel in a rabbit starts with capillaries and ends in capillaries, as well as identifying which vein breaks up into capillaries, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**:
- We need to identify a vessel that begins and ends with capillaries.
- We also need to find out which vein breaks up into capillaries.

2. **Reviewing the Options**:
- The options provided are:
- Pulmonary artery
- Renal vein
- Hepatic portal vein
- Renal artery

3. **Analyzing Each Option**:
- **Pulmonary Artery**: This artery carries deoxygenated blood from the right side of the heart to the lungs, where it goes through capillaries in the lungs. However, it does not end in capillaries; it ends in the pulmonary veins. So, this option is incorrect.
- **Renal Vein**: This vein drains blood from the kidneys. It does not start and end with capillaries, as it collects blood from the renal capillaries and drains it into the inferior vena cava. Thus, this option is also incorrect.
- **Hepatic Portal Vein**: This vein carries blood from the capillaries of the digestive organs (like the stomach and intestines) to the liver. It starts with capillaries in the digestive organs and ends in capillaries in the liver. Therefore, this is the correct answer for the first part of the question.
- **Renal Artery**: This artery supplies blood to the kidneys and does not start and end with capillaries, so it is incorrect.

4. **Identifying the Vein That Breaks Up into Capillaries**:
- The **Hepatic Portal Vein** is the only vein mentioned that breaks up into capillaries upon entering the liver. It divides into smaller branches that form capillary networks in the liver.

5. **Conclusion**:
- The vessel that starts and ends with capillaries is the **Hepatic Portal Vein**.
- The vein that breaks up into capillaries is also the **Hepatic Portal Vein**.

### Final Answer:
- The correct answer is the **Hepatic Portal Vein**.