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Embriología > Espermatogénesis > Flashcards

Espermatogénesis Flashcards

1
Q

Donde se lleva a cabo la espermatogenesis?

A

En los tubulos seminiferos (testiculo)

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1
Q

Formación de gametos masculinos

Dura aproximadamente 2 meses desde espermatogonia
hasta espermatozoide

A

Espermatogenesis

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2
Q

Estan presentes antes de la pubertad en el testiculo

A

Cordon seminifero

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3
Q

Estan presentes despues de la pubertad en el testiculo

A

Tubulo seminifero

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4
Q

Celulas germinales primordiales generan…

A

Espermatogonias

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5
Q

Celulas que nutren a las primordiales

A

Celulas de sertoli

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6
Q

Que secretan las celulas de leydig?

A

Testosterona

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7
Q

Células precursoras de gametos, división por mitosis

A

Espermatogonias

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8
Q

Celula en miosis I

A

Espermatocitos primarios

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9
Q

Celula en meiosis II

A

Espermatocitos secundarios

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10
Q

Espermatogonias Tipo A

A

Continúan ciclos mitoticos (forman nuevas espermatogonias )

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11
Q

Espermatogonias Tipo B

A

Diferenciacion en espermatocitos

Inician meiosis

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12
Q

Espermatogenesis (Meiosis I y Meosis II)

A

Espermatocito primario a espermatidas

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13
Q

Espermiogenesis
(maduracion morfologica y funcional)

A

Espermatidas a espermatozoides

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14
Q

Células –precursoras de gametos ♂ - terminaron meiosis 2

Haploides – 23 cromosomas de 1 cromátida

A

Espermatidas

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15
Q

Etapas de la espermiogenesis

A

Condensación nuclear

Formación del acrosoma

Formación del flagelo

Reducción del citoplasma

16
Q

LH produce sus efectos en qué celulas del testiculo?

A

Celulas de Leydig

17
Q

FSH produce sus efectos en qué celulas del testiculo?

A

Celulas de Sertoli

18
Q

Que hormona inhibe la secrecion de FSH en la adenohipofisis?

A

Inhibina

19
Q

Que hormona inhibe la secrecion de GnRH en el hipotalamo y de LH en la adenohipofisis?

A

Testosterona

Embriología (4 decks)

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