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Blastocyst Embryonic Development - Anatomy & Physiology (view source)
Revision as of 14:06, 13 August 2009
, 14:06, 13 August 2009→Pre-Implantation Development
* Zona pellucida ruptures with the development of a small fissure just large enough for the blastocyst to squeeze out.
* Zona pellucida ruptures with the development of a small fissure just large enough for the blastocyst to squeeze out.
* Blastocyst ''''hatches'''' from the zona pellucida.
* Blastocyst ''''hatches'''' from the zona pellucida.
** '''Rodent,Dog,Cat,Primate''': 8 days after fertilization
** '''Rodent, Dog, Cat, Primate''': 8 days after fertilization
** '''Ungulates''': 12 days after fertilization.
** '''Ungulates''': 12 days after fertilization.
* Blastocyst free-floating within the Uterus, totally dependent on the uterine environment for survival.
* Blastocyst free-floating within the Uterus, totally dependent on the uterine environment for survival.