The thickest chamber of the human heart is:
Correct answer: D. Left ventricle
- A. Left atrium
- B. Right atrium
- C. Right ventricle
- D. Left ventricle
Explanation
The left ventricle of your heart is larger and thicker than the other chambers. This is because it has to pump the blood further around the body, and against a higher pressure. The right ventricle pumps the oxygen-poor blood to the lungs through the pulmonary valve. The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle through the tricuspid valve, and hence does not need very thick walls. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve; hence, it also doesn't need thick walls.
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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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