Which chamber of the heart has the thickest muscular tissues?
Correct answer: D. Left ventricle
- A. Right atrium
- B. Right ventricle
- C. Left atrium
- D. Left ventricle
Explanation
The left ventricle has the thickest muscular wall because it must pump blood through the whole systemic circulation at high pressure. The right ventricle pumps only to the nearby lungs and the atria merely push blood into the ventricles, so their walls are thinner.
This question appeared on the UHS MDCAT 2026 paper, which you can sit online with every answer explained.
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About Human Heart
The human heart is a four chambered muscular pump that maintains double circulation through the pulmonary and systemic circuits. Questions cover atria, ventricles, valves, major blood vessels, the cardiac cycle, pressure changes, the conduction system and ECG, while distinguishing arteries and veins from the chambers that receive or eject blood.
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