Renal papilla 

Renal papilla
1. Renal triangle 
2. Efferent artery
3. Renal artery
4. Renal vein
5. Renal hilum
6. Renal pelvis
7. Ureter
8. Minor calyx
9. Renal capsule
10. Inferior renal capsule
11. Superior renal
      capsule

12. Afferent vein
13. Nephron
14. Minor calyx
15. Major calyx
16.
Renal papilla
17. Renal column
Frontal section through the kidney.

In the kidney, the renal papilla is the location where the Medullary pyramids empty urine into the renal pelvis. Histologically it is marked by medullary collecting ducts converging to channel the fluid. Transitional epithelium begins to be seen.

Role in disease

Some chemicals toxic to the kidney, called nephrotoxins, exert their damage at the renal papillae. Damage to the renal papillae may result in death to cells in this region of the kidney, called renal papillary necrosis.

See also

External links

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