Arrange the following in increasing order in which they contribute to total renal vascular resistance: A. Afferent aeriole B. Renal aery C. Interlobar, arcuate and interlobular aeries D. Peritubular capillaries
High-Yield Explanation
Approximate pressures and vascular resistances in the circulation of a normal kidney: Pressure in Vessel (mm Hg) Percent of Total Renal Vascular Vessel Beginning End Resistance Renal aery 100 100 =0 Interloba, arcuate, and interlobular aeries =100 85 =16 Affferent aeriole 85 60 =26 Glomerular capillaries 60 59 =1 Efferent aeriole 59 18 =43 Peritubular capillaries 18 8 =10 Interlobar, interlobular, and arcuate veins 8 4 =4 Renal vein 4 =4 =0