How the heart works
Heart, as soon as not called both the motor and the pump. If everything is clear with the motor, then the heart can be called a pump conditionally. But it is the functions of the heart pump that performs.
A pump is a device for injecting and moving a liquid or gas. The pressure at the pump outlet must be greater than the pressure at the inlet - the pressure difference, which is the cause of excess pressure and movement of the transported liquids and gases. Also, the pumps were divided according to the principle of action into three-dimensional (suction) and dynamic (pushing). Volumetric pumps work by the principle of alternating filling the working chamber with liquid and pushing it out of the chamber. An example can serve almost any household pump for inflating balls, bicycle cameras, etc. Dynamic pumps work on the basis of inertia of forces. The pressure is created by: rotation and blades, additional liquids and gases (jet pumps) and hydrotarans. Our heart corresponds to a bulky pump, because of the similarity in the structure.
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