The _______ Pump(s) Blood into the Great Arteries Leaving the Heart

Question

The _______ pump(s) blood into the great arteries leaving the heart.
A) ventricles
B) atria
C) mitral valve
D) aorta

Accepted Answer

The ventricles are the two lower chambers of the heart responsible for pumping blood out of the heart and into the circulatory system. Specifically, the left ventricle pumps oxygenated blood into the aorta, which is the largest artery in the body and carries blood to the rest of the body. Therefore, option A is the correct answer. Options B and C are incorrect because the atria are the upper chambers of the heart that primarily receive blood returning to the heart, and the mitral valve is a valve that regulates blood flow between the left atrium and left ventricle. Option D is incorrect because the aorta receives blood from the left ventricle, rather than pumping blood itself.