The<unk>  are a group of blood vessels that supply the nephrons in many excretory systems.
The<unk>  branch from the renal artery which supplies blood to the kidneys.
The<unk>  later diverge into the capillaries of the glomerulus.
Afferent arterioles
Peritubular capillaries
Renin-angiotensin system
Postganglionic fibers
Loop of Henle
Efferent nerve
Thick ascending limb of loop of Henle
Sympathetic trunk