A hydraulic model of the cardiovascular system for illustrating a plurality of physiological concepts and relationships including arterial compliance, venous compliance, and peripheral resistance, said model comprising: a.) a cardiac subsystem for moving a fluid in a singular direction in a closed hydraulic system; b.) an arterial subsystem for modeling arterial compliance, the arterial subsystem fluidically coupled with the cardiac subsystem to receive the fluid discharged from the cardiac subsystem; c.) a peripheral resistance subsystem for modeling peripheral resistance, the peripheral resistance subsystem fluidically coupled with the arterial subsystem to receive the fluid discharged from arterial subsystem; d.) a peripheral venous (PV) subsystem for modeling peripheral venous compliance and for modeling a peripheral venous pump (PVP), the peripheral venous subsystem fluidically coupled with the peripheral resistance subsystem to receive the fluid discharged from the at least one downstream conduit; and e.) a central venous (CV) subsystem for modeling central venous compliance and for modeling a thoracic pump (TP), the CV subsystem fluidically coupled with the PV subsystem to receive the fluid discharged from the PV subsystem and to pass the fluid to the cardiac subsystem to complete the cardiovascular cycle.