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Summary

samenvatting voortplantingsstelsel

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samenvatting van het onderdeel voortplantingsstelsel binnen het vak anatomie en fysiologie aan de Arteveldehogeschool in de richting verpleegkunde

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Anatomie: Het voortplantingsstelsel


Termen:
• Gameten (23 chromosomen)
o Voortplantingscellen
o Bij dieren: spermacel en eicel
• Bevruchting (2 x 23 chromosomen)
o Versmelting van mannelijke en vrouwelijke gameet
• Gonaden
o Voortplantingsorganen
o Bij mensen: testes en ovaria
• Zygote (46 chromosomen)
o Bevruchte eicel
o Alle cellen die hieruit voortkomen vormen een menselijk lichaam, en hebben
hetzelfde erfelijk materiaal

Te kennen figuren
• 19.1
• 19.5
• 19.6
• 19.8
• 19.11
• 19.12


19.1.1. de testes




In het scrotum

, In het scrotum
• Temperatuur regeling
o Ideaal= 1,1 graden lager dan elders in het lichaam
o Musculus cremaster: spier die de testis omhoog trekt
o Tunica dartos: weefsellaag met gladde spieren die de scrotumhuid
samentrekt (rimpelig)
• Bouw
o Tunica albuginea (‘witte deklaag’), loopt uit in
o Tussenschotten (septa), tussen
o Opgerolde testiskanaaltjes. (1,5 km per testis) (produceren spermacellen)
o Tussen. De kanaaltjes: interstitiële cellen (produceren Androgenen)
o Eindpunt kanaaltjes: rete testis (rete=net)
• Spermatogenese
o In de testiskanaaltjes
§ Spermatogonia: stamcellen voor spermatogenese
§ Sertolicellen: voedend en stimulerend

Spermatogonium

Primaire spermatocyt

Secundaire spermatoyt

Spermatiden

Spermacellen




!Belangerijk! aantal chromosomen in lichaamscellen bevatten. Voor elke cel. Die meiose.
Ondergaat, produceren de testes vier spermacellen, terwijl de ovaria slechts 1 eicel
produceren.


• Spermacel
o Kop
§ Celkern met chromosomen
o Middenste deel
§ Mitochondriën
o Staart
§ Zwepend, voortbeweging
§ Uniek in menselijk lichaam
o Ontbreekt

Connected book
 image
Frederic H. Martini, Edwin F. Bartholomew Anatomie en fysiologie, met MyLab NL toegangscode 6e editie
Publisher: mei 2017 ISBN: 9789043035873 Edition: 6

Document information

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Hoofdstuk voortplanting
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