any of the smallest branches of an artery, terminating in capillaries
Anterioles are the principal controllers of blood flow and pressure.
renal artery, segmental arteries, interlobar arteries, arcuate arteries, cortical radiate arteries, afferent arterioles, glomerulus, efferent arteriole, peritubular capillaries, venules, interlobar veins, arcuate veins, interlobar veins, renal vein.