The left ventricular wall of the heart is thicker than the right ventricular wall, so it can

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The left ventricular wall is thicker than the right ventricular wall because it needs to pump blood with greater pressure to the systemic circulation (the whole body). The right ventricle only needs to pump blood to the lungs, which have lower pressure, so its wall is thinner. A and D are incorrect because the thickness of the ventricular wall does not affect the volume of blood it can accommodate or the size of the valve. B is incorrect because the ventricular walls do not play a role in expanding the thoracic cage during diastole; instead, the ribcage moves passively due to changes in air pressure during breathing.

The Left Ventricular Wall of the Heart Is Thicker Than