Final answer:
Blood flows from the renal artery to the segmental arteries, then to the interlobar arteries, and enters the renal columns. From there, it splits into arcuate arteries, which give rise to cortical radiate arteries. The cortical radiate arteries then branch into afferent arterioles, which enter the capillaries supplying the nephrons.
Step-by-step explanation:
The renal blood supply starts with the branching of the renal artery from the aorta. Blood flows from the renal artery to the segmental arteries, then to the interlobar arteries, and enters the renal columns. From there, it splits into arcuate arteries, which give rise to cortical radiate arteries. The cortical radiate arteries then branch into afferent arterioles, which enter the capillaries supplying the nephrons. Finally, blood returns to the renal vein and exits the kidney.