Pulmonary veins supply blood to the heart chamber:
Correct answer: B. Left atrium
- A. Right atrium
- B. Left atrium
- C. Right ventricle
- D. Left ventricle
Explanation
The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium. From the left atrium, blood flows into the left ventricle. The left ventricle pumps the blood to the aorta which will distribute the oxygenated blood to all parts of the body.
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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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