This segment over here consists of our left pump. And each one of these pumps consists of two chambers. We have the atrium and we have the ventricle. Now, the atrium is the chamber that receives our blood from the rest of our body and the ventricle receives the blood from the atrium and it pumps the blood to the organs, tissues and cells of our body. So the heart consists of two pumps that are connected in serious next to one another. We have the right pump and we have the left pump.