Likewise, the heart can be filled to a greater extent by making use of the diastolic reserve volume, as is done in the Frank-Starling mechanism. Making use of both systolic reserve and diastolic reserve volumes, maximal stroke volume is achieved. Heart function is similar to lung function in this regard. By increasing both stroke volume and heart rate over rest values, cardiac output in excess of that at rest Cardiac Reserve can be called upon (Figure 1.04).
Back To Index