Abstract
THE flow of blood through the microvasculature is as vital to life as that through the heart and great vessels. Vasomotor control of the circulation is accomplished principally in the arteriolar vessels whereas most of the circulating blood volume is contained within the vessels of the microcirculation. But the bulk of investigative effort directed at the cardiovascular system has been concerned with the heart and major vessels. Why, then, has the rheology of blood within the microvasculature occupied such a quiet position in clinical medicine? One answer may be that the clinician has not commonly related a failure of capillary . . .