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Samenvatting: lymfestelsel - Fysiologie II

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Samenvatting van het derde hoofdstuk: fysiologie van het lymfestelsel. Voor 2de bachelor studenten dierenzorg aan Vives Roeselare.

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Uploaded on
January 6, 2025
Number of pages
3
Written in
2024/2025
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Fysiologie van het lymfestelsel
Functies van het lymfestelsel
2 delen -> afweer tgn ziekteverwekkers

• Lymfevaten = systeem v kanalen
o overtollig weefselvocht afvoert (lymfe)
 venen
o MO, celafval… eruit filteren
• Lymfoïde organen & weefsels
o Immuunreacties tgn ziekteverwekkers

3 primaire functies:

• Productie, onderhoud & transport lymfocyten
o Gevormd in rode beenmerg & thymus
o Opgeslagen in lymfoïde organen (bv milt)
o Reageren op aanw ziektewekkers: bacteriën, afwijkende
lichaamscellen, vreemde EW…
• Terugkeer vloeistoffen & opgeloste deeltjes vanuit perifere weefsels nr bloed
o Vocht opgenomen in lymfevaten = lymfe
o MO, celafval, vreemd materiaal eruit filteren in lymfeknopen
• Transport van hormonen, voedings- en afvalstoffen van weefsels nr bloed


Lymfevorming
Ontstaat vanuit bloedplasma

Nt alle vloeistof die thv capillairen nr weefsels ging, w terug opgenomen in bloed

 Overtollig weefselvocht
• Opgenomen door lymfecapillairen in weefsel
-> lymfevaten -> veneuze circulatie
• Vocht in lymfevaten = lymfe(vocht)




Kleine lymfecapillairen -> steeds grotere lymfevaten -> ductus thoracicus -> vena cava (-> hart)

• Gn spieren in wanden
 Afh v contracties vd omringende skeletspieren
 Lichaamsbewegingen brengen lymfe in beweging
• Grote lymfevaten: eenrichtingskleppen
• Voorkomen lymfe terugstromen
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