A portion of cardiovascular system that transport oxygen depleted blood from the heart to the lungs and brings oxygenated blood back to heart is

Options

A. Coronary circulation
B. Systemic circulation
C. Pulmonary circulation
D. Single circulatory system

Answer

To solve the question regarding the portion of the cardiovascular system that transports oxygen-depleted blood from the heart to the lungs and brings oxygenated blood back to the heart, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Functions of the Cardiovascular System**:
- The cardiovascular system is responsible for transporting blood throughout the body. It has different circuits for different functions.

2. **Identify the Types of Circulation**:
- There are several types of circulation in the cardiovascular system:
- **Coronary Circulation**: Supplies blood to the heart muscle itself.
- **Systemic Circulation**: Delivers oxygenated blood to the body and returns deoxygenated blood to the heart.
- **Pulmonary Circulation**: Carries deoxygenated blood from the heart to the lungs and returns oxygenated blood back to the heart.
- **Single Circulatory System**: A type of circulation found in some animals (like fish) where blood passes through the heart only once in each complete circuit.

3. **Analyze the Question**:
- The question specifically asks for the part of the cardiovascular system that transports oxygen-depleted blood to the lungs and brings oxygenated blood back to the heart.

4. **Select the Correct Option**:
- Based on the definitions:
- **Coronary circulation** is not correct as it pertains to the heart muscle.
- **Systemic circulation** is also not correct as it deals with the body tissues.
- **Single circulatory system** is not applicable to humans.
- **Pulmonary circulation** is the correct answer as it specifically involves the movement of blood to and from the lungs.

5. **Conclusion**:
- Therefore, the correct answer to the question is **Pulmonary Circulation**.

### Final Answer:
The portion of the cardiovascular system that transports oxygen-depleted blood from the heart to the lungs and brings oxygenated blood back to the heart is **Pulmonary Circulation**.