Lecture 5- Histology Flashcards
Corticomedullary junction
Between cortex and medulla- lined with vasculature
Describe pathway through the nephron
Glomerulus -> proximal convoluted tubule -> proximal straight tubule -> thin limbs of the the loop of henle -> thick ascending limb of the loop of Henle -> distal convoluted tubule -> collecting duct
What two things will you see in the cortex
Medullary rays- proximal straight tubules, thick ascending limb of loop of Henle, and collecting ducts
Corical labyrinth- in between rays, consists of proximal convoluted tubules, distal convoluted tubules, glomeruli
What would you see in corticomedullary junction
Arcuate vessels, no glomeruli
What would you see in outer medulla
No glomeruli, thick contains ascending limb of loop of henle
Outer stripe- proximal straight tubules and thick ascending limb of loop of henle
Inner stripe- mixture of thin and thick walled profiles
What would you see in inner medulla
Thin limbs of loop of henle and collecting ducts
Components of glomerulus
Fenestrated capillaries, pericytes (podocytes), parietal layer is epithelium, visceral layer is podocytes and capillaries
Has vascular and urinary poll
Has mesangial cells- regular and extraglomerular
Juxtaglomerular apparatus
Regulates single nephron filtration rate
Has macula densa, juxtaglomerular granule cells, and extraglomerular mesangium
Proximal tubule
Has brush border
Periodic nuclei
Thin limb of loop of henle
Flat squamous epithelium
Thick ascending limb of loop of henle
Lumenal nuclei
Cuboidal epithelium
Lots of mitochondria
Ureter
Star shaped lumen
Transitional epithelium
Lamina propria
Equine ureter as lots of glands
Urinary bladder
Transitional epithelium and lamina propria
Tunica serosa is formed by peritoneum
Tunica musclaris is referred to as detrusor muscle
Female urethra
Short passage
Transitional epithelium straight to stratified squamous
Male urethra
Long passage
Transitional epithelium -> cuboidal -> stratified squamous
