Sciatic vein of frog opens in

Options

A. Heart
B. Kidney
C. Pelvic region
D. Liver

Answer

To answer the question regarding where the sciatic vein of a frog opens, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Sciatic Vein**: The sciatic vein is a blood vessel found in frogs that carries impure blood from the lower part of the body.

2. **Identify the Circulatory System**: Frogs have two portal systems: the renal portal system and the hepatic portal system. The sciatic vein is part of the renal portal system.

3. **Function of the Renal Portal System**: The renal portal system is responsible for transporting blood from the lower body to the kidneys. It collects impure blood from the lower limbs.

4. **Connection of the Sciatic Vein**: The sciatic vein collects blood from the inner side of the frog's leg and joins with the femoral vein (which is on the outer side of the leg) to form the renal portal vein.

5. **Entry into the Kidneys**: The renal portal vein then carries this impure blood into the kidneys through various branches.

6. **Conclusion**: Therefore, the sciatic vein of the frog opens into the kidneys.

### Final Answer:
The sciatic vein of the frog opens into the **kidneys**.

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