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NATUURWETENSCHAPPEN
Lisa Reumers
KO: VOORTPLANTINGSSTELSEL
VAN DE VROUW
AGENDA
 Voortplantingsstelsel van de vrouw:
menstruatiecyclus + geboorte pg 91-93
MENSTRUATIECYCLUS
KALENDER – MENSTRUATIE EINDIGT OP 26 MEI EN CYCLUS DUURT 28
DAGEN
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
menstruatie - ovulatie - vruchtbare periode
menstruatie ovulatie
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 281 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 281 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
v r u c h t b a r e p e r i o d e
OEFENING PG 91
Samenvatting
 Menstruatie: ongeveer 5 dagen + begin menstruatiecyclus
 Eisprong of ovulatie: is 14 dagen voor het einde van de cyclus
 Vruchtbare periode:
 Eisprongmarge: eisprong + 3 dagen marge ERVOOR en 3 dagen ERNA
 Overlevingsduur zaadcellen: +3 dagen VOOR de eisprongmarge
 Overlevingsduur eicel: +1 dag NA de eisprongmarge
VERBETERING
1 2 3 4 5 6 7 8 9 1
0
1
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
2
0
2
1
2
2
2
3
2
4
2
5
1 2 3 4 5 6 7 8 9 1
0
1
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
2
0
2
1
2
2
2
3
2
4
2
5
26 27 28 29 30 31
VERANDERINGEN IN GEDRAG VANAF
DE PUBERTEIT
 Hormoonwerking  wijzigingen in gedrag & emoties
 12 – 13 jaar  zoektocht naar eigen ‘ik’
 Sterke verbondenheid met een bepaalde persoon
Volwassene: popidool, acteur, sportfiguur
VERANDERINGEN IN GEDRAG VANAF
DE PUBERTEIT
 14-16 jaar
eigen mening
‘erbij horen’
heel beïnvloedbaar
belang uiterlijk
belangstelling andere geslacht neemt toe
eigen grenzen aftasten  conflicten
 De weg naar volwassenheid
Hoe geraken eicel en zaadcel bij elkaar?
BEVRUCHTING
1.Geslachtsgemeensc
hap
2.Bevruchting
3.Zwangerschap
4.Geboorte
BEVRUCHTING
in de eileider
1 zaadcel dringt doorheen
de wand van de eicel
=> zygote vormt een
bevruchtingsmembraan.
DE INNESTELING VAN HET
EMBRYO
 DE BEVRUCHTING GEBEURT IN DE EILEIDER => ZWANGERSCHAP!
 INDIEN DE EICEL NIET BEVRUCHT WORDT, STERFT ZE AF.
Het baarmoederslijmvlies wordt, samen met bloed, uitgestoten => MENSTRUATIE
zaadcel
eicel (vrijgekomen
na ovulatie)
zygote of
bevruchte
eicel
zygote deelt zich
Zwangerschap: van zygote tot
embryo
DE EMBRYONALE ONTWIKKELING
embryo: 4 weken oud
embryo: 5 weken oud
embryo: 7 weken oud
FOETUS vanaf 8 weken :
menselijke kenmerken
Vervolg zwangerschap:
van embryo  foetus
EMBRYO
OF
Eénling of tweeling?
OF
1-eiige of 2-eiige tweeling?
1-eiige of 2-eiige tweeling?
OF OF
2-eiige tweeling
1-eiige tweeling
Tweelingen
splitsing vóór de
14e dag, anders ...
siamese tweeling!
placenta
navelstreng
FOETUS van 8 weken
Vervolg zwangerschap: de foetus
dooierzak
zuurstofarm / afvalstoffenrijk
zuurstofarm / afvalstoffenrijk
zuurstof- / voedingsstoffenrijk
zuurstof- / voedingsstoffenrijk
JIJ KIEST ...
DE BABY NIET ...
• kenmerken van een zwangerschap:
- geen menstruatie
- grotere/gespannen borsten
- vaker urineren
- moeheid
- misselijkheid ‘s ochtends
- …
Wat te doen bij zwangerschap?
• zwangerschapstest gebaseerd
op hormonen in urine
Zwangerschap: echografie
ECHOGRAFIE
geluidsgolven worden door de baarmoeder gestuurd
→ zo krijg je een beeld van de foetus, ook in 3D!
1. moederkoek
2. navelstreng
3. foetus
4. urineblaas
5. vagina
6. baarmoederwand
7. vruchtzak
8. vruchtwater
1
2
3
4
5
6
7
8
BEREKENINGSMETHODE GROEI
EMBRYO/FOETUS
- 1e maand : 1 x 1 = 1 cm
- 2e maand : 2 x 2 = 4 cm
- 3e maand : 3 x 3 = 9 cm
- 4e maand : 4 x 4 = 16 cm
- 5e maand : 5 x 5 = 25 cm
- 6e maand : 6 x 5 = 30 cm
- 7e maand : 7 x 5 = 35 cm
- 8e maand : 8 x 5 = 40 cm
- 9e maand : 9 x 5 = 45 cm
- geboorte : +/- 50 cm !
D
E
B
A
B
Y
I
S
K
L
A
A
R
Pwp week 3

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Pwp week 3