Fig. 1

Microcirculation structure and function. The organ vasculature system has been anatomically and functionally subclassified into macro and microcirculation. Macrocirculation is constituted by conduction arteries (such as the aorta) before entering the resistance arteries (such as the mesenteric arteries) with the main purpose of transporting blood. Microcirculation is composed of pre-arterioles and arterioles regulating blood flow, leading to capillaries allowing the exchange of gases, nutrients, hormones, and other molecules