click below
click below
Normal Size Small Size show me how
Renal histology
Renal histology lectures 1 and 2
Question | Answer |
---|---|
Filtration barrier | fenestrations of glomerular capillaries, fused basement membrane, filtration slits |
Juxtaglomerular apparatus | Extraglomerular mesangial cells, macula densa (modified DCT), granular/juxtaglomerular cells (modified SM of affarent arteriole) |
Parietal layer of Bowmann's capsule | simple squamous |
PCT (convoluted portion) | simple cuboidal, brush border (reabsorption), basolateral interdigitations (Na+ transport out), mitochondria (active transport) |
Pars Recta (thick descending limb) | brush border (secretion of organic acids), no basolateral interdigitations, mitochondria (active transport) |
Thin limbs | simple squamous |
Thick ascending limb | simple cuboidal, no brush border, basolateral interdigitations (Na+ transport), mitochondria (active transport), Tomm-Horsfall protein production |
Distal convoluted tubule | simple cuboidal, no brush border, basolateral interdigitations (Na+ transport), mitochondria (active transport) |
Collecting tubule cell types | principal cells + intercalated cells + DCT cells |
Collecting tubule histocytology | simple cuboidal, intercalated have darker staining and brush border remnant |
Principal cell function | Na+ reabsorption, K+ secretion, H2O reabsorption (ADH mediated) |
Intercalated cell function | Acid-base balance |
Collecting duct cell types | principal cells + intercalated cels |
Collecting duct histocytology | simple columnar |
Vasa recta | simple squamous with RBCs inside (if not washed out) |
Ureters | transitional epithelium, lamina propria, circular/longitduinal SM, adventitia |
Transitional epithelium details | stratified with mature surface cells which are cuboidal/columnar called umbrella cells |
Umbrella cell surface | inflexible plaques with surface vesicle invaginations in between |
Bladder histology | transitional epithelium, lamina propria, circular/longitudinal/circular SM, adventitia |
Prostatic urethra | transitional epithelium (continuation of bladder) |
Membranous urethra | psuedostratified columnar |
Spongy urethra | stratified columnar/squamous |