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Blastocyst Embryonic Development - Anatomy & Physiology (view source)
Revision as of 13:46, 3 July 2008
, 13:46, 3 July 2008New page: * In the Ootid, male and female pronuclei along with the first and second polar bodies are present. * Fusion of male and female pronuclei to form a single diploid nucleus ('''Syngamy''') *...
* In the Ootid, male and female pronuclei along with the first and second polar bodies are present.
* Fusion of male and female pronuclei to form a single diploid nucleus ('''Syngamy''')
* Zygote (diploid) undergoes mitotic divisions ('''cleavage''').
* Cleavage gives rise to daughter cells called '''Blastomeres'''.
* Cleavage divisions continue and the 4-celled Embryo gives rise to an 8-celled Embryo.
* After the 8-celled stage, a ball of cells is formed. This stage is referred to as a '''Morula'''.
* Cells of the Morula continue to devide and a '''Blastocyst''' develops, consisting of:
** '''Inner Cell Mass''' (ICM)
** '''Blastocoele''' cavity
** Single layer of '''Trophoblast''' cells
* Blastocyst ''''hatches'''' from the '''Zona Pellucida'''.
* Blastocyst free-floating within the Uterus.
* Fusion of male and female pronuclei to form a single diploid nucleus ('''Syngamy''')
* Zygote (diploid) undergoes mitotic divisions ('''cleavage''').
* Cleavage gives rise to daughter cells called '''Blastomeres'''.
* Cleavage divisions continue and the 4-celled Embryo gives rise to an 8-celled Embryo.
* After the 8-celled stage, a ball of cells is formed. This stage is referred to as a '''Morula'''.
* Cells of the Morula continue to devide and a '''Blastocyst''' develops, consisting of:
** '''Inner Cell Mass''' (ICM)
** '''Blastocoele''' cavity
** Single layer of '''Trophoblast''' cells
* Blastocyst ''''hatches'''' from the '''Zona Pellucida'''.
* Blastocyst free-floating within the Uterus.