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Samenvatting BS11

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In dit document zijn alle leerdoelen uit de toetsmatrijs van BS11 uitgewerkt. Inclusief afbeeldingen

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Uploaded on
June 25, 2023
Number of pages
30
Written in
2022/2023
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Summary

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BS 11 leerdoelen
1. Kan de regulatie van de bloeddruk door de nieren uitleggen en de rol van het Renine
Angiotensine Aldosteron Systeem (RAAS) hierbij verklaren.

Regulering glomerulaire filtra>esnelheid
Regulering van de nierfunc/e
• Plaatselijke regulering (autoregula/e)
o Diameter afferente en efferente arteriolen en glomerulaire capillairen
o Compenseren kleine varia/es in de rr
• Sympathisch zenuwstelsel
o Sterke vernauwing afferente arteriolen, hierdoor zal er minder bloed naar de
glomerulus stromen waardoor de filtra5esnelheid afneemt
o Bij stress/inspanning
• Hormonale regulering
o Angiotensine II
o An/diure/sche hormoon (ADH)
o Aldosteron
o Atriaal natriure/sch pep/de (ANP)

Renine-angiotensinesysteem
• Lage glomerulaire druk
• Juxtaglomerulaire complex geeL renine af




Angiotensine II à RR omhoog
• Krach/ge vaatvernauwing capillairnetwerk; hoger druk nierarterien
• Vernauwing efferente arteriolen; hogere druk GFS omdat de druk in de glomerulus
toeneemt
• Bevordering ADH-afgiLe; reabsorp/e water, terug opgenomen in bloedbaan, meer
volume en dus hogere bloeddruk
• AfgiLe aldosteron en epinefrine doorbijnieren; hoger RR en reabsorp/e Natrium, zout in de
bloedbaan trekt vocht aan wat zorgt voor een hogere bloeddruk




1

,An/diure/sch hormoon (ADH)
• AfgiLe door angiotensine II of hypothalamus
• Vergroot de doorlaatbaarheid van water
o Distale tubulus contorus
o Verzamelbuis
o Geen ADH; Deze 2 niet doorlaatbaar voor water dus alles water vast à veel en helder
urineverlies
• Versterkt het dorstgevoel




Aldosteron
• AfgiLe door angiotensine II en s/jging Kalium
• Bevordert resorp/e natrium en afgiLe kalium in DTC

Atriale natriure/sche pep/den (ANP) (bloeddruk wordt lager)
- AfgiLe door hartspiercellen atria bij hypertensie/hoge bloedvolume
• Afname Natrium reabsorp/e
• Verwijding glomerulaire capillairen à toename GFD en waterverlies à rr omlaag
• Remming RAAS




2

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