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samenvatting anatomie en fysiologie H19

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samenvatting van de powerpoints van h19: voortplantingsstelsel

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Hoofdstuk 19: het voortplantingsstelsel

Mannelijk voortplantingsstelsel

Het voortplantingsstelsel bestaat uit:
❖ gonaden
❖ kanalen
❖ accessoire klieren
❖ uitwendige geslachtsorganen




❖ testes en epidiymis liggen in het scrotum of de balzak
❖ scrotum:
o huid (rimpelig)
o glad en skeletspierweefsel (temp regeling)
o scrotumholte omgeven door sereus membraan
❖ epididymis = bijbal
o opslagplaats voor zaadcellen




testes (1 testis)




testiskanaaltjes/buisjes of tubuli seminiferi
82

, ❖ cellen van leydig/interstitiële cllen: testosteronproductie
❖ sertolicellen/voedstercellen: zaadcellen voeden en hun rijping beïnvloeden → gestimuleerd door
testosteron




Bouw spermacel:




`

De voortplantingsorganen

Epididymis of bijbal:
❖ functioneel onrijpe spermacellen komen via de c-ductuli efferentes aan in de bijbal
❖ is 7m lang
❖ spermacellen verblijven er 2 weken

de functie:
❖ aanpassing vloeistof testeskanaaltjes
❖ beschadigde spermacellen verwijderen
❖ opslagplaats voor rijpende spermacellen

de zaadleider of vas/ductus deferens:

❖ 40-50 cm lang
❖ Loopt vanaf epidimdys naar urethre
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