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Volledige Samenvatting Pathologie Blok 2.3

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Hierbij de volledige samenvatting van Pathologie blok 2.3, voor de toets Maagdarmziektes. Alle lessen, hoorcolleges en studievragen zijn erin verwerkt. Succes met leren!

Last document update: 7 year ago

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  • March 27, 2017
  • March 30, 2017
  • 33
  • 2016/2017
  • Summary

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Samenvatting Pathologie Blok 2.3
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Lymfocyten
- 20-40% van de lymfocyten bevinden zich in de bloedsomloop
o De rest bevindt zich in de lymfoïde organen en andere weefsels (ongeveer 1 biljoen)

Je hebt 3 soorten lymfocyten. De T-cellen, B-cellen en NK-cellen.
1. T-cellen (T = Thymus)
De lymfocyten in het bloed bestaan voor 80% uit T-cellen
1. Cytotoxische T-cellen
a. Vallen virussen aan of cellen die injecteert zijn met virussen
b. Zijn de belangrijkste cellen in cellulaire/celgemedieerde immuniteit
2. T-helpercellen
a. Stimuleren de activiteit van T- en B-cellen
3. T-suppressorcellen Verdere uitleg op pagina 2
a. Remmen de T- en B-cellen
 1 + 2 zijn regulerende T-cellen (= Immuunresponse)
 T-cellen verdedigen tegen afwijkende cellen en ziekteverwekkers (= celgemedieerde
immuniteit)
Gemedieerd betekent
2. B-cellen (B = Beenmerg) loopt via….
o De lymfocyten in het bloed bestaan voor 10-15% uit B-cellen
o B-cellen verdedigen tegen antigenen en ziekteverwekkers in lichaamsvloeistoffen
o Kunnen plasmacellen worden. Plasmacellen zorgen voor de afgifte van antistoffen
o Zorgen voor antistof gemedieerde immuniteit en/of humorale immuniteit
 Humoraal betekent ‘in lichaamsvloeistof aanwezig’

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