The intrarenal distribution of blood flow

摘要: Abstract The microvasculature of the kidney is organized in a manner that permits regional distribution blood flow to cortex, outer medulla, and inner medulla. resistance elements cortical microcirculation include interlobular arteries, afferent arterioles, efferent arterioles. Efferent arterioles arise from superficial glomeruli supply peritubular capillary plexus. In contrast, juxtamedullary give rise form vasa recta medulla with flow. Descending are contractile vessels whose parallel arrangement within medullary vascular bundles suggests they play role neural hormonal control versus kidney. Many methods have been devised an effort measure perfusion Early efforts relied principally on tracer accumulation or transit time. More recent approaches either single vessel videomicroscopy local tissue by laser Doppler. Although no method ideal, these various combined, through many investigators over years, delineate physiological processes regulate