Formation of Blastocyst
When morula enters uterus (4th days after fertilization), fluid filled space appears inside the morula. ď ą As the fluid increases in the blastocystic cavity ,it separates the blastomeres into two parts: Trophoblast {outer cell layer} Embryoblast {inner cell mass} At this stage of development the conceptus is called a blastocyst ď Ž
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