Which blood vessel carries deoxygenated blood from the upper parts body to the heart?

Options

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

Answer

**Step-by-Step Solution:**

1. **Understanding Blood Circulation**: Blood circulation in the human body consists of two main circuits: pulmonary circulation (to and from the lungs) and systemic circulation (to and from the rest of the body).

2. **Identifying Blood Vessels**: In systemic circulation, oxygenated blood is carried from the heart to the body through the aorta. After delivering oxygen to the tissues, the blood returns to the heart as deoxygenated blood.

3. **Upper Body Blood Return**: The blood returning from the upper parts of the body (head, neck, arms) must travel back to the heart.

4. **Key Blood Vessels**: The two main blood vessels that return deoxygenated blood to the heart are:
- **Superior Vena Cava**: This vessel carries deoxygenated blood from the upper body to the right atrium of the heart.
- **Inferior Vena Cava**: This vessel carries deoxygenated blood from the lower body to the right atrium.

5. **Conclusion**: Since the question specifically asks about the blood vessel that carries deoxygenated blood from the upper parts of the body to the heart, the correct answer is the **Superior Vena Cava**.

**Final Answer**: The blood vessel that carries deoxygenated blood from the upper parts of the body to the heart is the **Superior Vena Cava**.

---