What is the primary role of the ventricles in the heart?

The primary role of the ventricles in the heart is to pump blood. The heart has four chambers: two atria and two ventricles, with the ventricles being the lower chambers. The right ventricle pumps deoxygenated blood to the lungs for oxygenation, while the left ventricle pumps oxygenated blood to the rest of the body. This pumping action is crucial for maintaining circulation and ensuring that blood is effectively delivered to tissues and organs, supporting their function.

In contrast to the ventricles, the atria (the upper chambers of the heart) primarily receive blood from the body and lungs but do not play a direct role in pumping it out. Other options such as filtering or storing blood are functions associated with organs like the kidneys or the spleen, not the ventricles of the heart. Therefore, the primary function of the ventricles is clearly identified as the pumping of blood, essential for cardiovascular health and efficiency.