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Samenvatting practicum 10

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Overzichtelijke voorbereidingen van de practica, een combinatie van de practicumnota's en de slides. Structuren staan aangeduid op de preparaten, met telkens dezelfde weefsellagen aangegeven. Ideaal voor tijdens de practica, om de testjes te studeren en voor het examen!

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  • October 14, 2024
  • 8
  • 2023/2024
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BWL practicum 10: urinair stelsel 1
01/12/2023

B86: Nier hond (HE)

De nier bestaat uit een dunne capsula fibrosa, cortex en medulla
die eindigt in een papilla renalis. De grenszone tss merg en cortex
bevat grote bloedvaten: aa. & vv. arcuatae.

CAPSULA FIBROSA

- Dens collageen BW

CORTEX

3 lagen:

Cortex corticis

- Relatief dikke laag
- Geen nierlichaampjes
- Doorsneden doorheen tubulo contorti proximales & distales te vinden
o Tubulus contrortus I/proximales
▪ Komt het vaakst voor
▪ Éénlagig cilindrisch epitheel + borstelzoom
▪ Kleurt iets meer eosinofiel
o Tubulus contortus II/distales
▪ Kubisch tot afgeplat epitheel, geen borstelzoom
▪ Diameter meestal kleiner

, Pars convoluta

- Nierlichaampje v Malpighi
o Glomerulus (kluwen v capillairen)
o Podocyten (rond glomerulus; enkel
kernen zichtbaar)
▪ Vormen visceraal blad vh
kapsel v Bowman
o Parietaal blad: één laag afgeplatte
cellen
- Tubuli controrti proximales & distales

Striae medullares

- Mergstralen
o Tubuli recti
o Cilindrisch tot kubisch epitheel, gemaskerde kernen
o Afvoerwegen/ductus colligentes (zelfde maar bleker epitheel)
o Capillairen & lissen van Henle
▪ Beide afgeplat epitheel → moeilijker te onderscheiden
▪ Capillair heeft rbc’s in lumen, lis v Henle enkel vocht

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