Notes in b. Embryology: Fertilization and Implantation

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Published	07/28/2024	Primordial germ cells form in the {{c1::posterior epiblast}}
Published	07/28/2024	From the posterior epiblast, primordial germ cells migrate to the {{c1::yolk sac}}, after proliferating to about 4000 cells, they then migrate ba…
Published	07/28/2024	The part of the spermatogonia that is a bag of enzymes that plays a role in fertilization is the {{c1::acrosome}}
Published	07/28/2024	The part of the spermatogonia that contains the condensed chromosomes is the {{c1::head}}
Published	07/28/2024	The process of {{c1::capictations}} is when spermatagonia acquire the ability to fertilize the oocyte. It occurs in the {{c2::female reprodu…
Published	07/28/2024	The Corona Radiata provides?
Published	07/28/2024	The zona pellucida contains?
Published	07/28/2024	The enzymes contained within the corticle granules prevent?
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Published	07/28/2024	The interaction between a spermatagonia and oocyte is mediated by the interaction of?
Published	07/28/2024	The enzymes in the {{c1::acrosome}} are released upon contact with {{c2::ZP3 in the zona pellucida}}, allowing for entry past the {{c3::zona…
Published	07/28/2024	The {{c1::Zona reaction}} is initiated by the sperm binding to the egg {{c2::plasma membrane}}, where {{c3::Ca2+}} is released into the…
Published	07/28/2024	The first step initiated following the penetrence of sperm into the egg and release of corticle granules is?
Published	07/28/2024	After meiosis II is complete, the second stage of fertilization is?
Published	07/28/2024	After the formation of male and female pronuclei, the third step of fertilization is?
Published	07/28/2024	After the decondensation of male chromosomes, the fourth step of fertilization is?
Published	07/28/2024	An ovulated egg that has not been fertilized will have {{c1::1}} polar body(ies)
Published	07/28/2024	An ovulated egg that has been fertilized will have {{c1::2}} polar body(ies)
Published	07/28/2024	Correct fertilization will occur at the {{c1::ampulla of uterine tube}}
Published	07/28/2024	Cleavage begins about {{c1::24hrs}} after pronuclear fusion
Published	07/28/2024	All blastomeres (are/aren't) {{c1::are}} totipotent
Published	07/28/2024	The blastomeres are contained within the {{c1::zona pellucida}}
Published	07/28/2024	Zygotic transcription begins at {{c1::4-8}} cells
Published	07/28/2024	Compaction occurs after the {{c1::8-cell}} stage caused by changes in cell-cell adhesion molecules mainly {{c1::e-cadherin}}. At compaction cells…
Published	07/28/2024	Compaction of the 8 cell embryo leads to a 16 cell compact formation referred to as the {{c1::morula}}
Published	07/28/2024	What is one of the most significant proteins required for the compaction that occurs in the development of the morula?
Published	07/28/2024	At compaction, the cells that are on the outside of the morula are destined to become {{c1::trophoblasts}}
Published	07/28/2024	The placenta is formed by what?
Published	07/28/2024	The inner cells of the morula that will form the embryo proper are called the {{c1::inner cell mass}}
Published	07/28/2024	The appearance of {{c1::sodium channel}} on the surface of the {{c2::trophoblast}} cells on the outside of the morula drives the formation o…
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Published	07/28/2024	Hatching of the embryo from the zona pellucida occurs just prior to {{c1::implantation}}
Published	07/28/2024	Inability to hatch from the zona pellucida results in {{c1::infertility}}
Published	07/28/2024	Premature hatching from the zona pellucida leads to {{c1::uterine tube implantaion}}
Published	07/28/2024	During implantation, the trophoblast can be divided into the {{c1::cytotrophoblast}}, which is the stem cell population, and the {{c2::syncy…
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Published	07/28/2024	During the process of implantation, the syncytiotrophoblast breaks maternal capillaries, forming lacunae which function to?
Published	07/28/2024	At implantation the ICM will differentiate into?
Published	07/28/2024	The epiblast will form the {{c1::amnion and embryo}}
Published	07/28/2024	The hypoblast will form the {{c1::extraembryonic tissue}} like the {{c2::yolk sac}} and the {{c2::mesoderm}} that lines the {{c2::yolk sac}}
Published	07/28/2024	The yolk sac forms from the {{c1::hypoblast}}
Published	07/28/2024	The amniotic cavity form from the {{c1::epiblast}}
Published	07/28/2024	Monozygotic twinning is most commonly caused by?
Published	07/28/2024	Human embryonic stem cells can be derived from the {{c1::blastocyst}} stage of the human embryo
Published	07/28/2024	Fraternal twinning happens when {{c1::two oocytes}} are fertilized by {{c1::two sperm}}
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