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Samenvatting histologie hfdst 2

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samenvattingen cursus histologie onderdeel van Anatomie 1 (eerste bachelor revalidatiewetenschappen en kinesitherapie) met aanvulling notities van iedere les.

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HOOFDSTUK 2: Celkern
 DNA
 moleculen om DNA te kopiëren + mRNA,rRNA en mRNA aan te maken
 NIET: eiwitsynthese
 In het centrum van de cel
 Membraan + chromatne + nucleolus + matrix

2.1 De elementen van de kern




1. Kernme
mbraan
 D
u
bbel laag:
o Binnenzijde: eiwitenn laminen < chromatne
o Buitenzijde: polyribosomen < ER
 Tijdelijke opslag eiwiten
 Poriën voor kleine ionen en moleculen
MAAR: grotere moleculen via receptor of actef transport!
2. Chromatne
< DNA + histonen → parelketng
→ euchromatne (in kern)
→ heterochromatne (in nucleolus)
3. Neucleolus (bolvormig)
< rRNA + daarvoor coderend DNA en eiwit
4. Matrix
vult ruimte tss nucleolus en chromatne
< kernskelet

2.2 De celdeling of mitose
1. Interfase
2. Profase
3. Metaphase
4. Anafase
5. Telophase & cytokinese
(zie cursus p. 230)

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