The only vein in a human carrying oxygenated blood is:
Correct answer: B. Pulmonary
- A. Femoral
- B. Pulmonary
- C. Renal
- D. Iliac
Explanation
Pulmonary veins carry oxygen-rich blood from lungs to the left atrium. They are veins because they carry blood toward the heart.
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About Circulation
The circulatory system covers the chambers, valves and conducting pathway of the human heart, along with the cardiac cycle and control of heartbeat. It compares arteries, veins and capillaries by structure and function, and explains how the lymphatic system returns tissue fluid, transports absorbed fats and supports immunity.
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