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. And each pump contains an atrium and arabetrical. So let's take a look at the right atrium. The right atrium receives deoxnated blood from the systemic circulation of our cardiovascular system from the organs, the tissues and cells of our body.