Answer:
The four cameras of the heart are:
1) Right atrium = it receives venous blood from the cellars and, through the ventricular valve, sends it to the right ventricle.
2) Right ventricle = receives blood from the right atrium, which sends blood to the pulmonary artery and is in turn to the lungs for oxygenation.
3) Left atrium = receives the oxygenated blood that comes from the lungs through the pulmonary veins and in turn sends it to the left ventricle through the left atrio-ventricular valve.
4) Left ventricle = receives the oxygenated blood coming from the atrium and through the aortic valve sends it to the aortic artery, which in turn distributes it to the entire body.