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Samenvatting Anatomie en fysiologie van het urinair stelsel

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Anatomie en fysiologie van het urinair stelsel

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ANATOMIE & FYSIOLOGIE VAN
HET
URINAIR STELSEL
INLEIDING

OVERZICHT URINAIR STELSEL MAN-VROUW




FUNCTIES VH URINAIR STELSEL
Verwijderen (= excretie) vn organische afvalstoffen uit lichaamsvloeistoffen
 ureum = afbraakproduct vn eiwitten
 urinezuur = afbraakproduct vn DNA
 urobiline = gele kleur = afbraakproduct vn hemoglobine
 creatinine = afbraakproduct vn spierweefsel

Lozen vn deze afvalstoffen (= eliminatie)

Homeostatische regeling vn volume & concentratie opgeloste stoffen ih bloedplasme
 reguleren vn bloedvolume & BD
 reguleren vn ionenconcentraties (Na⁺, K⁺, Cl⁻, …)
 reguleren vn Ph vn bloed
 RBC-gehalte door productie vn EPO

, ANATOMIE

NIEREN


LIGGING
Lumbaal & gelegen achter peritoneum
Rechternier ligt lager dan linkernier
 vanwege de lever

(intra)peritoneale ruimte
= omgeven door peritoneum
 bevat: spijsverteringsorganen (dunne & dikke darm, maag, lever, milt

Retroperitoneale ruimte
= achter peritoneum
 bevat: nieren & bijnieren, stukken duodendum & dikke darm,
alvleesklier

Subperitoneale ruimte
= onder peritoneale ruimte
 bevat: blaas, urethra, dikke darm, voortplantingsorganen



MACROSCOPISCHE BOUW
Boonvormig (± 12 x 5cm)
Ventraal bedekt met peritoneum & omgeven door vetkapsel

Bestaat uit: - nierkapsel = capsula
- schorslaag = cortex
- merglaag = medulla
 piramiden met papillen
 zuilen vn Bertin

- nierbekken = pyelon/pyelum
 kleine nierkelken = calices minores
 grote nierkelken = calices maiores
 nierbekken = pyelon

- nierhilus met niervaten & ureter

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January 13, 2024
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