Embryology
Treatment of invitro fetilization

In Vitro Fertilization and its types

In vitro fertilization Definition;   In vitro fertilization (IVF) may be a method by which an egg is fertilized by a ga…

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yolk sac

Placenta and Extraembryonic Layers

Placenta   The placenta may be a temporary organ that connects the developing cranium via the duct to the female intern…

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Mechanism of Egg Activation

Activation of Egg Metabolism

Activation of the Egg Although fertilization is commonly considered the process of mixing two haploid nuclei solely, it…

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the slow block to polyspermy

Mechanism to avoid Polyspermy

Regulation of sperm entry The hindrance of polyspermy  Any sperm cell that enters the egg will provide a haploid nucleu…

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