Summary
Samenvatting MBG: Hoofdstuk 13
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Samenvatting hoofdstuk 13: Het voortplantingsstelsel
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Menselijke biologie & geneticaHoofdstuk 13: Het voortplantingssysteem
Als temperatuur in testikel onder 95F zakt,
trekken de spieren in de balzak samen om
deze dichter bij het lichaam te brengen.
Bulbourethrale klieren: produceren voorvocht
die de urinebuis schoonmaakt
Spermarijping duurt 9-10 weken. Gedurende
deze periode w de cellen omgeven door Sertoli
cellen die voeding voorzien.
Testosteron
Steroïde hormoon geproduceerd door
interstitiële cellen in teelballen
Functie:
- Regelt groei en functie v
voortplantingsorganen
- Stimuleert agressie en seksueel gedrag
, - Regelt ontwikkeling v secundaire
geslachtskenmerken
- Bepaalt snelheid v spermavorming
Wanneer testosteron op normaal level is of erboven
gaat, gaat deze de secretie v GnRH en LH inhiberen
(want deze zorgen voor extra testosteronproductie)
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