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Samenvatting urinewegstel met verschillende ziektebeelden $7.24
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Samenvatting urinewegstel met verschillende ziektebeelden

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Samevatting van het urinewegstelsel met verschillende ziektebeelden. Ook wordt de alvleesklier, de nieren en de lever besproken.

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  • September 20, 2021
  • 12
  • 2020/2021
  • Summary
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Nieren en urinewegstelsel

Ligging van de nieren.
- De nieren liggen in de lendenstreek aan weerszijden van de wervelkolom achterin de
buikholte (retroperitoneaal).




Bouw van de nieren
Iedere nier bestaat van buiten naar binnen uit de volgende onderdelen:
 Nierschors;
 Niermerg;
 Nierbekken.




Nierhilus
De volgende structuren gaan de nierhilus in of uit;
- Ureter (urineleider);
- Arteria renalis (nierslagader);
- Vena renalis (nierader);
- N. renalis




Doorbloeding nieren

,  Aanvoer bloed dmv renalis sinistra en dextra (a. renalis, dextra is langer);
 Nieren ontvangen 20% van het hartritmevolume;
 Elke 5 minuten passeert het totale bloedvolume (5L) de nieren.


Volgorde waarin de afvalstof je lichaam verlaat;
1. Nierslagader;
2. Nier;
3. Urineleider;
4. Blaas;
5. Urinebuis.


Nierkelken
Calix minor = kleine kelk
Calix major = grote kelk

Functies van de nieren
 Urinevorming
Uitscheiding van afvalstoffen
Regulatie hoeveelheid H2O
Regulatie hoeveelheid zouten
 Homeostase
Regeling RR (bloeddruk) (renine)
PH
Aanmaak en uitscheiding hormonen

Nefronen




Iedere nier is gebouwd uit ongeveer 1 miljoen nefronen.

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