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Learning Activity - Copy of 07 Implantation and Germ Layers
TypeLecture
ModuleLINCTEST - Lincoln Medicine 1 (Copy of 07 Genes and Early Embryology)
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Describe the differentiation of an inner cell mass and a trophoblast and their eventual fates (in general terms) include when and where it develops.

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Describe implantation include when and at what stage the conceptus passes into the uterine cavity; the disappearance of the zona pellucida; the invasive nature of the trophoblast; the possibility of ectopic implantation; and the decidual reaction in the uterine lining.

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Discuss the development of the bilaminar disc include the appearance of ectoderm and endoderm, the formation of the amniotic cavity and yolk sac.

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Explain the development of extraembryonic mesoderm, the chorionic cavity (i.e. extraembryonic coelom) and the connecting stalk.

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Describe the timing of these events.

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Discuss the formation of intraembryonic mesoderm, the appearance and function of the primitive streak and the formation of the trilaminar disc.

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Describe the fate, in very general terms, of the three germinal layers.

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