The heart chamber with the thickest wall is the
A) left ventricle.
B) right ventricle.
C) right atrium.
D) left atrium.
E) both atria have equally thicker walls than the ventricles.

Question

Quizplus · Accepted Answer

The left ventricle is responsible for pumping oxygenated blood to the rest of the body, requiring it to have a thicker muscular wall than the other chambers of the heart. In comparison, the right ventricle pumps deoxygenated blood only to the lungs and has a thinner wall. The atria have thinner walls than the ventricles as they do not need to pump blood as forcefully.

The Heart Chamber with the Thickest Wall Is the