The fact that the left ventricle of the heart is thicker than the right ventricle reveals that it ________.
A) pumps a greater volume of blood
B) pumps blood against a greater resistance
C) expands the thoracic cage
D) sends blood through a smaller valve

Question

Quizplus · Accepted Answer

The left ventricle pumps blood against a greater resistance because it has to pump the blood to the entire body, while the right ventricle only pumps blood to the lungs. As a result, the left ventricle needs to generate more pressure and force, which requires a thicker and more muscular wall.

The Fact That the Left Ventricle of the Heart Is