About the heart

That's where the engineering idea comes to mind. Our creators have shown wit and created a heart from two parts. Indeed, since our system is closed, and there is no need to push something somewhere, all the blood moves in a closed circle. Therefore, contraction of the heart muscle, creates a pressure that pushes blood from the ventricle outward into the circulatory system. Blood that pushes into the circulatory system pushes the blood of the atrium already in the system into the second part of the heart. This pressure and fills the atrium with blood, replacing the suction function, by analogy with the pump. Two parts of the heart are separated by a septum and connected by a hole with a valve. This makes it possible to create an effect of alternating operation of the pump working chamber. Instead of one, two cameras were made and the system was closed, as a result, the work of the heart resembles the work of a volumetric pump. This allows us to call our heart a pump, although it is not.