Urinary System Intro
Objectives:
1. Identify the following macroscopic renal structures:
a. calyx
b. papilla
c. renal pyramid
d. renal column
e. medullary ray
f. cortex
g. medulla
2. List the specific microscopic components of the structures named above.
3. Determine the histologic features that enable one to distinguish medulla from cortex upon gross examination of the kidney.
4. Concerning the nephron:
a. Identify segments of nephron in terms of light microscopy and ultrastructure.
b. Understand the difference between uriniferous tubule and nephron.
c. Describe relationship of collecting ducts to nephrons.
5. Concerning the renal vascular system:
a. Describe distribution of arterial blood vessels in the kidney.
b. Know the origin of various capillary networks in the kidney.
6. Develop an understanding of the morphologic components of the renal filtration apparatus and the countercurrent systems in the kidney.
7. Describe the basic morphologic features of ureter and bladder.
8. Identify ureter and bladder in tissue sections.
Slides:
#82 Bovine kidney
#81 Bovine ureter
#84 Canine urinary bladder
#85 Feline ureter
Urinary system Terms:
kidney lobe
calyx
medulla – inner
medulla – outer
papilla
cortex
medullary rays
renal pyramid
renal sinus
renal column
cortico-medullary junction
medullary ray
arcuate artery
papillary ducts
Nephron
renal loop (of Henle)
glomerulus, renal corpuscle
proximal convoluted tubule
brush border
mitochondria
thick descending limb
thin segment
thick ascending limb
junctional complex
distal convoluted tubule
collecting duct
light (or principal) cells of the collecting duct
dark (or intercalated) cells of the collecting duct
parietal layer, glomerular (Bowman's) capsule
visceral layer, glomerular (Bowman's) capsule
mesangial cells
endothelial cells
foot processes
podocytes
glomerular basement membrane
urinary pole of renal corpuscle
Vascular pole of renal corpuscle
arcuate arteries
peritubular capillaries
interlobular arteries
intralobular arteries
afferent arteriole (of the glomerulus)
efferent arteriole (of the glomerulus)
vasa recta
juxtaglomerular apparatus
juxtaglomerular cells (of the afferent arteriole)
extraglomerular mesangium
macula densa
ureter
transitional epithelium
tunica muscularis
tunica serosa
muscularis mucosae
lamina propria
Urinary bladder
urethra
erectile tissue
venous sinus (of erectile tissue)