Biologia ciclo verano 2014 embriologia
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Transcript of Biologia ciclo verano 2014 embriologia
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• Cantidad de espermatozoides que se depositan en el aparato genital femenino:
• Cantidad de espermatozoides que llegan al lugar de la fecundación:
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• Procesos importantes que debe experimentar el espermatozoides:
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“Solo los espermatozoides capacitados pueden atravesar la corona radiante y experimentar la
reacción acrosómica”.
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En Conclusión:
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Espermatozoide Ovulo Espermatozoide Ovulo
XY
X X
TESTICULOS OVARIOS
Diferenciación Gonadal
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A. Se pueden observar los pronúcleosB. Cigoto humano en fase bicelular
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“Cuando ya se han formado entre 12 y 32 blastómeros, se denomina mórula”.
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DIA 8
“Las células epiblasticas adyacentes al citotrofoblasto se denominan: Amnioblastos”.
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DIAS 13
• Aveces, el lugar de implantación sangra debido al aumento del flujo sanguíneo en los espacios lagunares. Se puede confundir con la hemorragia menstrual normal.
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Tercera Semana de Desarrollo
– Formación de las 3 capas germinales:
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