BIL0B für Test 1.10.19 > Oogenese > Flashcards

Oogenese Flashcards

(11 cards)

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1
Q

Ort?

A

Eierstöcke

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2
Q

Ausgangszellen?

A

Urkeimzellen (Ausgangszellen mit Erbinfos der Eltern, diploider CS), Mitose bis dahin

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3
Q

Größe?

A

-größer

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4
Q

Beginn?

A
  • im Mutterleib Beginn Prophase

- ab Pubertät Metaphase

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5
Q

Häufigkeit?

A

monatlich

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6
Q

Verlauf?

A 
Prophase 1 (Kindesalter)
Metaphase
Anaphase
Telophase (usw.)
- Energie sparen durch Auswerfen bei fehlender Befruchtung
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7
Q

Teilung des Plasmas?

A

ungleichmäßig

  • eine Zelle alle Organellen, viel ZP, Nährstoffe, Erbinfo
  • eine Zelle nur Erbinfo = Polkörperchen (stirbt ab)
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8
Q

Anzahl lebensfähiger Zellen?

A

etwa 96 (u.a. wgn Schwangerschaft, Pille weniger)

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9
Q

Dauer?

A

bis Wechseljahre

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10
Q

Anzahl Meiosen

A

wenig

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11
Q

Ergebnis im Vergleich zur Spermatogenese?

A

Qualität > Quantität

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BIL0B für Test 1.10.19
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