the Vascular System
arteioles and venules are close to
Capillaries, in general, are
running parallel next to perfusing muscle or tissues. These are well
illustrated by the photomicrographs of Smaje et al. (1970) in the
cremaster muscle of the rat (Fig. 7.1.2) and also by Zweifach et al.
974) in the cat omentum (Fig. 7.1.3).
rat cremaster muscle showing pattern
structure. Y-shaped and T-shaped branching junctions are common, in addition to cross-
bat (a flying mammal) wing and the mesenteric bed
mammal are popular preparations for studying blood flow in the
microcirculation. The flow into the capillaries has been shown