Frank Starling Mechanism
The Frank-Starling mechanism describes how the cardiac ejection volume depends on the changes of pulse, preload and afterload. If, for example, a person stands up, the preload is reduced in the short term, which is automatically answered with a lower pumping capacity. However, if, for example, physical exercises lead to a higher venous supply, i.e. more venous blood in front of the atria, the heart reacts accordingly with a stronger ejection fraction.