What are the two lower chambers of the heart called?

The two lower chambers of the heart are called the ventricles. They play a critical role in the heart’s function by pumping blood out of the heart—specifically, 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 separation of chambers is essential for the efficient functioning of the circulatory system.

In contrast, the atria are the upper chambers of the heart, valves aid in regulating blood flow and preventing backflow, and the septum is the wall that separates the right and left sides of the heart. Understanding these anatomical components helps clarify the unique functions of each part and their contributions to overall heart health and operation.