1 — Inferior pole; Inferior extremity; 2 — Ureter; 3 — Renal pelvis; 4 — Renal veins; 5 — Renal artery; 6 — Hilum of kidney; 7 — Medial border; 8 — Segmental artery; Segmental vein; 9 — Renal papilla; 10 — Superior pole; Superior extremity; 11 — Renal cortex; 12 — Medullary rays; 13 — Renal pyramids; 14 — Fibrous capsule; 15 — Renal columns; 16 — Lateral border; 17 — Minor calyces; 18 — Major calyx