1. Renal System Histology and Models

2. Renal system in cat:
Kidney
Ureter
Urinary bladder

3. Kidney
Ureter

4. Kidney
Ureter
Urinary bladder

5. Ureters Urinary Bladder

6. Rugae inside urinary bladder that was cut open

7. Spleen
Adrenal gland
Kidney
Renal artery
Ureter
Urinary bladder

8. Adrenal gland
Kidney
Ureter
Urinary bladder
Prostate gland
Urethra

9. vasa recta
peritubular capillaries

10. vasa recta
peritubular capillaries

11. 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

12. REGIONS
Cortex
Medulla
Renal Pelvis

13. 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 tubules, 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.

14. On this model you need to know the regions, vessels, and the following structures:
Pyramids
Hilus
Ureter
Major calyx
Minor calyx

15. Hilus
Major calyx
Minor calyx
Ureter

16. Renal artery
Segmental artery
Interlobar artery
Interlobular artery
Arcuate artery

17. Interlobar artery
Interlobular artery
Arcuate artery

18. REGIONS
Cortex
Medulla
Renal pelvis

19. STRUCTURES
Pyramids
Major calyx
Minor calyx
Hilus
Ureter

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

21. KIDNEY MODEL Glomerulus Proximal convoluted tubule
Descending loop of the nephron
Thick segment
Thin segment
Ascending loop of the nephron
Distal convoluted tubule
Collecting tubule (where urine is most similar to the bladder)
Vasa recta

22. Glomerulus
Vasa recta

23. Distal convoluted tubule
Proximal convoluted tubule
Glomerulus
Descending loop of the Nephron
Ascending loop of the nephron
Collecting tubule (where the fluid is most similar to urine found in the bladder)

24. 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

25. GLOMERULUS
Efferent arteriole
Afferent arteriole
Glomerular capsule
The glomerular space is where urine is most dissimilar to the urine in the bladder

26. KIDNEY SLIDES
Glomerulus
Kidney tubules (simple cuboidal epithelium)

27. Glomerulus
Tubule
Skip

28. Tubule
Glomerulus

29. Kidney
Tubule
Glomerulus

30. Pancreas: don’t get this confused with a glomerulus in the kidney!

31. Pancreas Kidney