500 HANDBOOK OF PHYSIOLOGY -^ CIRCULATION I 



250 





 40 



i- 



250 



250 r 



FIG. 8 



ciable LVED pressure increase. In this study heart in ventricular activity brought about by increasing 



rate was held constant and the stroke volumes were aortic resistance appear to resemble those brought 



13.6 ml in panel i, 14.0 in 2, 13.6 in 3, and 13.7 in 4. about by the administration of norepinephrine. A 



Figure 8.4 is also informative in that tlic alterations comparison of panels i and 2 and of panels i and 3 



