1. LABORATORY EXERCISES FOR THE URINARY SYSTEM
cortex
Medulla

3. DEMO SLIDE BOX 172 – (450-E001-H-76). Kidney, horse.
Uriniferous tubules expand
both the cortex and medulla
medullary rays,
the inner medulla
corticomedullary junction
outer cortex
arcuate
vessels

4. uriniferous tubule = structural and functional unit of the kidney
Podocytes
Podocytes cover the glomerular capillaries and extend into Bowman’s space as they originated from the cells of the wall when the capillary tuff invaded the original tubule
capillary
tuff
original
tubule

5. DEMO SLIDE BOX 172– (450-E001-H-76). Kidney, horse.
parietal layer of the glomerular capsule (“Bowman’s capsule”),
renal corpuscle
proximal tubules
JG complex
“brush” border
macula
densa
Distal
tubules

6. DEMO SLIDE BOX 172– (450-E001-H-76). Kidney, horse.
distal tubule
uriniferous tubule
the inner medulla
capillary
arcuate
vessels
outer cortex
attenuated (“thin”
or “intermediate”) tubule (thin loop of Henle)
JG complex
Collecting duct
Distal tubule

7. DEMO SLIDE BOX 172– (450-E001-H-76). Kidney, horse.
Bowman's space
Proximal tubule distal tubule
blood vessels

8. DEMO SLIDE BOX 172– (450-E001-H-76). Kidney, horse.
Distal tubule
collecting tubule
blood
vessel
collecting duct
transitional
epithelium
Bowman's space
attenuated (“thin”
or “intermediate”) tubule
papillary duct

9. DEMO SLIDE BOX 174 (593 or 593A)– Kidney, dog.
Bowman's space
Proximal tubule distal tubule
uriniferous tubule
Collecting duct
renal corpuscle

10. DEMO SLIDE BOX 182 (BV-1-72) –Kidney, cow.
Transitional
epithelium
contex
medulla
Vein
Muscular artery
Nerve
White fat

11. DEMO SLIDE BOX 182(BV-1-72) –Kidney, cow.
Proximal tubule distal tubule
Macula densa

12. Slide #102 (SP-1-72). Kidney, sheep.
cortical labyrinth
outer cortex
medullary rays
medulla
arcuate
vessels
inner and outer zones
corticomedullary junction
Papillary
ducts
medullary rays with proximal and
distal straight tubules

13. Slide #104 (20kK G). Kidney, goat.
renal corpuscles; proximal and distal convoluted tubules; macula densa and JG complex
proximal and distal convoluted tubules
Vascular pole
proximal convoluted tubules
renal
corpuscles
Urinary pole
macula densa
JG complex
distal convoluted tubules

14. Slide #104(20kK G). Kidney, goat.
renal corpuscles; proximal and distal convoluted tubules; macula densa and JG complex
renal corpuscles
proximal convoluted tubules
Urinary pole
Vascular pole of
macula
densa
proximal and
distal straight tubules
distal convoluted tubules

15. Slide #104(20kK G). Kidney, goat.
proximal and
distal straight tubules
attenuated (“thin”
or “intermediate”) tubule (thin portion of loop of Henle
Blood capillaies
proximal and distal straight tubules

16. Slide # 140 (Pf5-207a). Kidney, pig (PAS stain).
brush border of the
proximal renal tubules
stain (PAS) for glycoproteins and some other carbohydrates. The basement membrane contains considerable glycoproteins
basement membrane.

17. Renin granules in Kidney (PAS)
258
Renin granules in Kidney (PAS)
Distal tubule
Proximal
tubule
Juxamadullary
nephrons
Renin granules

18. Renin granules in JG cells of Kidney (PAS)
258
Renin
granules

19. DEMO SLIDE BOX 173- (E3-H-166). Ureter, horse.
transitional epithelium, lamina propria/submucosa, tunica muscularis, and serosa.
Identify the transitional epithelium, lamina propria/submucosa, tunica muscularis, and serosa.
How many layers of smooth muscle are present in the tunica muscularis and how are they arranged? 2 OR 3 LAYERS. USUALLY YOU CAN MAKE OUT 2 LAYERS OF SMOOTH MUSCLE. THEY EXACT ARRANGEMENT IS OFTEN DIFFICULT TO DETERMINE. CIRCULAR—LONGITUDINAL--CIRCULAR
What percentage of the overall thickness of the wall is made up by the tunica muscularis?
LESS THAN 50%
tunica muscularis has 2 OR 3 LAYERS of smooth muscle and occupies less than 50% of the wall
serosa.
lamina propria/submucosa,
tunica muscularis
transitional epithelium

20. DEMO SLIDE BOX 222 – (C-H-168,169). Ureter and urethra, dog.
Mesothelium of serosa
serosa.
Erectile tissue/vessels
of the dog penis
transitional epithelium

21. Slide #55 (M 3- 210j). Ureter, monkey.
VENULE
capillary
Nerve
arteriole
nerve
MUSCULAR ARTERY
MUSCULAR ARTERY AND COMPANION VEIN. SHOULD ALSO FIND ARTERIOLES, VENULES, AND CAPILLARIES
transitional epithelium

22. DEMO SLIDE BOX 69 – Ureter, dog.
tunica muscularis
transitional epithelium

23. Slide #52 (M4-13K). Ureter, monkey.
transitional epithelium
tunica muscularis.

24. Slide #54 (Dog1-214C). Urinary bladder, dog.
transitional epithelium
tunica muscularis
GREATER THAN 50%
Of wall
Three layers
arrangement is
VARIABLE;
and INTERMIXED
lamina
propria/submucosa

25. DEMO SLIDE BOX 188 (SP-1-161). Urinary bladder, sheep.
transitional
epithelium
tunica muscularis

26. DEMO SLIDE BOX 70 – Urinary bladder, dog.
transitional epithelium
tunica muscularis.
tunica muscularis.

27. Slide #49 (Rbt 100-211A). Urinary bladder, rabbit.
LARGE INTESTINE
LARGE INTESTINE
transitional epithelium