The left ventricle has a thicker wall than the right ventricle because the left ventricle has to pump blood against a higher pressure.

Question

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The left ventricle has to pump blood to the entire body, which requires more force and pressure than the right ventricle's role in pumping blood to the lungs. This results in the left ventricle having a thicker wall to accommodate the higher pressure needed for systemic circulation.

The Left Ventricle Has a Thicker Wall Than the Right