The blood vessel of frog which opens in its ventricles bringing oxygenated blood is

Options

A. Pulmocutaneous artery
B. Inferior vena cava
C. Pulmocutaneous vein
D. Superior vena cava

Answer

To solve the question regarding the blood vessel of a frog that opens into its ventricles and brings oxygenated blood, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Frog's Circulatory System**:
- Frogs have a three-chambered heart consisting of two atria (auricles) and one ventricle. This structure allows for a mixing of oxygenated and deoxygenated blood.

2. **Identify the Blood Vessels**:
- The key blood vessels to consider are:
- Pulmocutaneous artery
- Inferior vena cava
- Pulmocutaneous vein
- Superior vena cava

3. **Determine the Function of Each Vessel**:
- **Pulmocutaneous artery**: Carries deoxygenated blood from the heart to the lungs and skin for oxygenation.
- **Inferior vena cava**: Brings deoxygenated blood from the lower body to the heart.
- **Pulmocutaneous vein**: Carries oxygenated blood from the lungs and skin to the heart.
- **Superior vena cava**: Brings deoxygenated blood from the upper body to the heart.

4. **Identify the Vessel Bringing Oxygenated Blood**:
- Among the listed vessels, the **pulmocutaneous vein** is the one that carries oxygenated blood back to the heart and opens into the ventricle.

5. **Conclusion**:
- Therefore, the blood vessel of the frog that opens into its ventricles and brings oxygenated blood is the **pulmocutaneous vein**.

### Final Answer:
The blood vessel of the frog which opens in its ventricles bringing oxygenated blood is the **pulmocutaneous vein**.

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