There are the Right Atrium, Right Ventricle, Left Atrium, and the Left Ventricle.
Blood from the Inferior, and the Superior vanes travel to the Right Atrium where it goes through a valve that takes the blood to the Right Ventricle. After it gets to the Right Ventricle, the blood goes through another valve that takes it to the Pulmonary artery. The Pulmonary artery then takes the blood to the lungs where it gets oxygenated by the Alveoli. After the blood gets oxygenated it travels to the Left Atrium. After the blood gets to the Left Atrium, it travels through another valve that takes it to the Left Ventricle. After it gets through the Left Ventricle, it goes to the Aorta where it goes to the rest of the body.