1. Renal System Histology and Models

2. Renal system in cat:
Kidney
Ureter
Urinary bladder

3. CAT KIDNEY
Renal pyramids
Renal columns
Cortex
Medulla
Ureter
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4. Kidney
Ureter
Urinary bladder

5. Ureters Urinary Bladder

6. Kidney
Ureter

7. Rugae inside urinary bladder that was cut open

8. Spleen
Adrenal gland
Kidney
Renal artery
Ureter
Urinary bladder

9. Adrenal gland
Kidney
Ureter
Urinary bladder
Prostate gland
Urethra

10. Trigone
Prostate gland
Urethra

11. vasa recta
peritubular capillaries

12. vasa recta
peritubular capillaries

13. Kidney Regions The kidney is divided into three REGIONS.
If the question asks you to name the REGION, the answer is one of the below:
CORTEX
MEDULLA
RENAL PELVIS

14. REGIONS
Cortex
Medulla
Renal Pelvis

15. Kidney Structures
If the question asks you to name the STRUCTURE, it is one of the below:
Within the cortex, you will find the glomeruli and the proximal and distal convoluted tubules.
Within the medulla you will find the loops of Henle, collecting ducts, the pyramids and the columns (pale area between the pyramids).
Within the renal pelvis you will find the hilus, which branches into the major calyxes, which branch into the minor calyxes.

16. Cortex:
Glomerulus
Proximal and Distal convoluted tubules
Medulla:
Loops of Henle
Collecting duct
Pyramids
Columns
Renal pelvis
Hilus
Major calyxes
Minor calyxes

17. You don’t need to ID these on this part of the model; they are too small here
CORTEX:
Glomerulus
Proximal and Distal convoluted tubules
MEDULLA:
Loop of Henle
Collecting duct
Pyramid
Column

18. Renal pelvis:
Hilus
Major calyx
Minor calyxes
Ureter

19. Pyramids
Hilus
Ureter
Major calyx
Minor calyx

20. Renal artery
Segmental artery
Interlobar artery
Interlobular artery
Arcuate artery

21. Interlobar artery
Interlobular artery
Arcuate artery

22. KIDNEY MODEL Glomerulus Proximal convoluted tubule
Descending loop of the nephron
Thick segment
Thin segment
Ascending loop of the nephron
Distal convoluted tubule
Collecting duct
Vasa recta

23. Glomerulus
Vasa recta

24. Distal convoluted tubule
Proximal convoluted tubule
Glomerulus
Descending loop of the Nephron
Ascending loop of the nephron
Collecting duct

25. Study Tip:
To get oriented, always start at the glomerulus and run your finger down the proximal convoluted tubule. When it loops back up and thickens, you are now at the distal convoluted tubule.
Thick segment of the ascending loop of the nephron
Thick segment of the descending loop of the nephron
Thin segment of the ascending loop of the nephron
Thin segment of the descending loop of the nephron

26. GLOMERULUS
Efferent arteriole
Afferent arteriole
Glomerular capsule
Macula densa

27. KIDNEY SLIDES Glomerulus (simple squamous epithelium)
Convoluted tubules
(simple cuboidal epithelium)

28. Glomerulus
Tubule
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29. Convoluted Tubule
Glomerulus

30. Kidney
Convoluted Tubule
Glomerulus