Behavior of Mechanical Model of Systemic Circuit of Cardiovascular System

A simplified physical model of the systemic circuit of the human cardiovascular system was previously designed and constructed for the purpose of studying certain mechanical aspects of fluid flow in such systems. With the model an extensive investigation of several aspects has now been made. It consists essentially of experimental studies of the effect of variation of rigidity of the tubes, of the effect of bleeding on performance, and the effect of the variation of frequency of drive on systemic behavior. A preliminary report was previously made on the first two subjects. For these, a significant addition is described in the present report. Also, important findings concerning frequency effects are given in some detail.