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In ons lichaam
 97%   v.h. water is ZOUT
 3% is ZOET
   • Hiervan is 75% bevroren (gletsjers)

  Slechts 0,75% beschikbaar voor leven op aarde
Voorkomen                                 %     Liter (75kg)

Intracellulair                            30%      22,5 l
Extracellulair                            25%     18,75 l
Transportmiddel (bloedbaan, lymfevaten)   5%       3,75 l

Totaal                                    60%     45 liter


 60% à 70% v.h. lichaamsgewicht
   • Baby’s zelfs 75%
   • Ouderen 50%
 Per dag 2,5l nodig
 Intracellulair:binnen de cellen
 Extracellulair: buiten de cellen
 Ruimte tussen cellen
 Smeermiddel voor gewrichten en
  membranen
…
 Bloedbaan
  • B.v. zuurstof
 Lymfevaten
  • Hormonen
 Water   heeft hoge warmtecapaciteit
  • Veel energie nodig om water 1°C te laten stijgen
  • 10 keer meer energie om 100g water 1°C te laten
    stijgen dan 100g ijzer
  •  Buffercapaciteit voor warmte
 Water   heeft hoge verdampingswarmte
  • Veel energie nodig om zweet te verdampen, wordt
   onttrokken aan ons lichaam
 B.v. zweet is een oplossing van water en
  zouten (Na, Cl)
 In de celstofwisseling spelen elektrolyten
  (zoals Na en K) een cruciale rol
 Spijsvertering
 Algemeen als chemisch reactiemidden
Waterinname   Waterverlies


Drinken           1500 ml   Nieren           1500 ml


Eten              600 ml    Huid (zweet)     500 ml


Metabolisme       400 ml    Longen           400 ml
                            (uitademing)



                            Darmen (feces)   100 ml


Totaal            2500 ml   2500 ml

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Water inlichaam

  • 2.  97% v.h. water is ZOUT  3% is ZOET • Hiervan is 75% bevroren (gletsjers)  Slechts 0,75% beschikbaar voor leven op aarde
  • 3. Voorkomen % Liter (75kg) Intracellulair 30% 22,5 l Extracellulair 25% 18,75 l Transportmiddel (bloedbaan, lymfevaten) 5% 3,75 l Totaal 60% 45 liter  60% à 70% v.h. lichaamsgewicht • Baby’s zelfs 75% • Ouderen 50%  Per dag 2,5l nodig
  • 4.  Intracellulair:binnen de cellen  Extracellulair: buiten de cellen  Ruimte tussen cellen  Smeermiddel voor gewrichten en membranen …
  • 5.  Bloedbaan • B.v. zuurstof  Lymfevaten • Hormonen
  • 6.  Water heeft hoge warmtecapaciteit • Veel energie nodig om water 1°C te laten stijgen • 10 keer meer energie om 100g water 1°C te laten stijgen dan 100g ijzer •  Buffercapaciteit voor warmte  Water heeft hoge verdampingswarmte • Veel energie nodig om zweet te verdampen, wordt onttrokken aan ons lichaam
  • 7.  B.v. zweet is een oplossing van water en zouten (Na, Cl)  In de celstofwisseling spelen elektrolyten (zoals Na en K) een cruciale rol  Spijsvertering  Algemeen als chemisch reactiemidden
  • 8. Waterinname Waterverlies Drinken 1500 ml Nieren 1500 ml Eten 600 ml Huid (zweet) 500 ml Metabolisme 400 ml Longen 400 ml (uitademing) Darmen (feces) 100 ml Totaal 2500 ml 2500 ml