In Frog anterior abdominal vein is formed by union of

Options

A. femoral vein
B. sciatic vein
C. renal vein
D. pelvic vein

Answer

To answer the question, "In Frog, anterior abdominal vein is formed by the union of?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks about the formation of the anterior abdominal vein in frogs. We need to identify which veins contribute to its formation.

2. **Identify the Anterior Abdominal Vein**: The anterior abdominal vein is a significant vein in the frog's circulatory system. It plays a role in the hepatic portal system.

3. **Know the Components of the Hepatic Portal System**: The anterior abdominal vein is part of the hepatic portal system, which is responsible for directing blood from parts of the gastrointestinal tract to the liver.

4. **Determine the Formation of the Anterior Abdominal Vein**: The anterior abdominal vein is formed by the union of two pelvic veins. These pelvic veins are specifically the ventral branches of the femoral veins.

5. **Select the Correct Option**: Based on the information that the anterior abdominal vein is formed by the union of two pelvic veins, we can conclude that the correct answer is **Option D**.

### Final Answer:
In frog, the anterior abdominal vein is formed by the union of two pelvic veins.

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