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Discussion in 'DAT Discussions' started by arpitpatel86, Jun 5, 2008.

  1. arpitpatel86

    arpitpatel86 2+ Year Member

    May 9, 2008
    does the zygote for in the inner cells of the blastocyst?
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  3. pistolpete007

    pistolpete007 2+ Year Member

    May 18, 2008
    good question.....i know that embryo is in the inner that then same thing as a zygote? stupid question i know...can some1 help me on that
  4. gkhan

    gkhan 2+ Year Member

    May 27, 2008
    zygote : sperm+egg

    then it divides
    morula -> goes to uterine wall -> becomes a blastula-> becomes a gastula
    *basically these are just names for the zygote @ different stages.

    first division in 32 hours, 2nd in 60 hours (4cells), 3rd in 72 hours (8)
    by the 4th day it enters uterine wall. and you get 3 germ layers, meso/endo/ecto.

    bastocyst has 3 types of cells, that impregnate the endometrium and thats where you get vasculation of the embryo from.

    i just reviewed this a few days ago while studying, someone correct me if i'm wrong.
  5. Mstoothlady2012

    Mstoothlady2012 5+ Year Member

    Apr 7, 2007
    I think blastocyst is the last stage before the zygote actually becomes an embryo.

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