The outer layer of the blastoderm; the ectoderm. See Blastoderm, Delamination.
In the chick embryo, following delamination which separates the blastoderm into two layers, the epiblast is the upper layer of cells that contains the presumptive ectoderm, mesoderm and some endoderm. It is separated from the lower hypoblast.
The outer layer of a blastula that gives rise to the ectoderm after gastrulation.
(Greek, epi = above, upon) the layer (of the bilaminar embryo) that generates endoderm and mesoderm by migration of cells through the primitive streak. The remaing cells form ectoderm.
An embryonic lineage that is derived from the inner-cell mass of the blastocyst, which gives rise to the body of the fetus.
A small flap of tissue on the side of the grass embryo axis opposite the scutellum
Gr. epi - on, upon; Gr. blastema - an outgrowth]. The outer layer of the amniote blastoderm. It gives rise to cells of all three germ layers.
In embryology, the epiblast is a class of cells present during gastrulation. It is one of two types of cells arising from the inner cell mass, but only epiblast cells give rise to the three germ layers of the embryo. Together, epiblast and hypoblast comprise the bilaminar disk of the developing embryo.