Although cardiac contractions supply some of the power propelling blood through the vascular system, what other property of the circulatory system keeps blood circulating?
A) Arterial expansion and recoil
B) Pressure gradients
C) Valves in medium-sized veins
D) Skeletal muscle and respiratory pumps

Question

Quizplus · Accepted Answer

Pressure gradients are the primary force that keeps blood circulating through the vascular system.

Although Cardiac Contractions Supply Some of the Power Propelling Blood