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Samenvatting Anatomie cardiovasculair stelsel: bloed

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In deze samenvatting staat alle leerstof omtrent het hoofdstuk cardiovasculair stelsel: bloed. Ik was geslaagd voor dit vak.

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H11: CARDIOVASCULAIR STELSEL: BLOED


11.1. SOORTEN LICHAAMSVLOEISTOFFEN


 Bloed
 Lymfevocht

Arteries/slagaders voeren het bloed van het hart weg. Ze vertakken zich in
weefsels tot capillairen/haarvaten, waar stofwisseling gebeurt. Voeding ->
weefsels & afvalstoffen -> bloed
Venen/aders voeren het zuurstofarm, CO2 rijk en afvalstofrijk bloed terug naar
het hart.
Lymfevaten vangen overtollige vocht op en voervoeren het naar bloedbaan.



Blauw =
zuurstofarm
Rood =




40% vast
60% vloeibaar: 2/3 ICV, 1/3
ECV

, 11.2. FUNCTIES EN EIGENSCHAPPEN BLOED


1. FUNCTIE

Functie Uitleg
Transport O2 en CO2, VS, afvalstoffen, H2O, hormonen
Buffer Stabilisering pH & ionensamenstelling interstitiële vloeistof
in lichaam via diffusie (homeostase)
Stollingssysteem Beperking vloeistofverlies bij verwonding door
aanwezigheid enzymen & stollingsfactoren
Immuunsysteem Verdediging gifstoffen en ziekteverwekkers door
aanwezigheid witte bloedcellen en antistoffen
Stabilisering Warmte skeletspieren  andere lichaamsdelen
lichaamstemperatuur


2. SAMENSTELLING


Cellen




Bloedplasma

Bloed = los bindweefsel, cellen + grondsubstantie + eitwitten
-> volwassen man: 5-6 liter
-> volwassen vrouw: 4-5 liter
-> 37°C, pH = 7,4
-> viscositeit 5x zo groot als water
Cellen: 45%
- RBC: rode bloedcellen of erytrocyten

, - WBC: witte bloedcellen of leukocyten
- bloedplaatjes of trombocyten
Bloedplasma = waterige grondsubstantie (ionen, organische VS en
afvalproducten)
-> oplosbare plasma-EW (albuminen, globulinen, fibrinogeen, regulerende EW)
-> 55%




!!!!!!!
!!!!

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