Heart Chambers and Blood Flow Pathway

The heart chambers work together to move blood through the body and the lungs. The human heart has four chambers: the right atrium, right ventricle, left atrium, and left ventricle. The atria are the upper chambers, and the ventricles are the lower chambers. They are separated by the interatrial septum and the interventricul...

The heart has four chambers—the right atrium, right ventricle, left atrium, and left ventricle.

Externally, the coronary sulcus separates the atria and ventricles, while the anterior and posterior interventricular sulci divides the two ventricles.

Internally, the interatrial septum separates the atria, and the interventricular sept...