Blastocyst
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The blastocyst is a structure formed in the early embryonic development of mammals. It possesses an inner cell mass also known as the embryoblast which subsequently forms the embryo, and an outer laye
Early development of the human embryo from ovulation through implantation
Zygote
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A zygote is a eukaryotic cell formed by a fertilization event between two gametes.
Zygote formation: egg cell after fertilization with a sperm. The male and female pronuclei are converging, but the genetic material is not yet united.
Views of a Foetus in the Womb detail