Why does the left venrical have thicker walls than the right ventricle?

The left ventricle has thicker walls than the right ventricle because it needs to generate higher pressure to pump oxygenated blood throughout the entire body, while the right ventricle only pumps deoxygenated blood to the lungs for oxygenation. This increased muscularity in the left ventricle allows it to overcome the greater resistance encountered in systemic circulation compared to the low-pressure pulmonary circulation handled by the right ventricle. The structural adaptation ensures efficient blood flow and optimal functioning of the heart.