Stofwisseling
Ademhaling Spijsvertering Cardiovasculair Urinair
Aanvoer O2 Opname Transport Uitscheiding
Afvoer CO2 voedingsstoffen voedings- en afvalstoffen
afvalstoffen, O2
en CO2
FUNCTIES URINESTELSEL
1. Verwijdering van organische afvalstoffen die in ons lichaam gevormd worden
2. Regulatie van het bloedvolume en de bloeddruk
Aanpassen volume water dat met urine verloren gaat
Afgifte van EPO
Afgifte van renine
3. Regulatie van plasmaconcentraties van ionen
Na+
K+
Cl-
Ca2+ (calcitriol)
4. Stabilisatie van de pH van het bloed : hoeveelheid H+ en HCO3- dat wordt
uitgescheiden
5. Behoud van waardevolle voedingsstoffen (Glc, AZ)
DE ORGANISATIE VAN HET URINAIR STELSEL
Ren; renes (nieren)
Ureters
Vesica urinae (urineblaas)
Urehtra
DE NIEREN
UITWENDIGE ANATOMIE EN ANATOMIE OP DOORSNEDE
Dorsaal in abdomen
Niet in het buikvlies, liggen erbuiten
Retroperitoneaal : achter het perineum
Rechter nier ligt lager door lever
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