Common · Knowledge
Epiblast
Embryonic inner cell mass tissue that forms the embryo itself, through the three germ layers
In amniote embryonic development, the epiblast (also known as the primitive ectoderm) is one of two distinct cell layers arising from the inner cell mass in the mammalian blastocyst, or from the blastula in reptiles and birds. It drives the embryo proper through its differentiation into the three primary germ layers, ectoderm, mesoderm and endoderm, during gastrulation.
From Wikipedia
In amniote embryonic development, the epiblast (also known as the primitive ectoderm) is one of two distinct cell layers arising from the inner cell mass in the mammalian blastocyst, or from the blastula in reptiles and birds. It drives the embryo proper through its differentiation into the three primary germ layers, ectoderm, mesoderm and endoderm, during gastrulation. The amniotic ectoderm and extraembryonic mesoderm also originate from the epiblast. The other layer of the inner cell mass, the hypoblast, gives rise to the yolk sac. The layer surrounding the inner cell mass, the trophectoderm, gives rise to the chorion.
Text: Wikipédia, CC BY-SA 4.0. · Image: Panzer VI-II (CC BY-SA 3.0) ·
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Blastomere
Type of cell produced by cleavage of the zygote after fertilization
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Mesoderm
Germ layer in the very early embryo
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Ectoderm
Germ layer that forms the brain, spinal cord, epidermis and more
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Inner cell mass
Mass of cells within the embryo
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Trophoblast
Cells forming the outer layer of a blastocyst
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Amnion
Innermost membranous sac that surrounds and protects the developing embryo