blastodisc , auch: blastodisk

This is true, except that each has a white blastodisc at the animal pole.

The intersection of the white and gray regions establishes a distinctly visible border for the blastodisc.

The embryo forms a disc of cells, called a blastodisc, on top of the yolk.

The blastodisc, itself, is about 2.3 mm in diameter and occupies about 100 of the egg's circumference.

The furrow first appears at the animal pole, and gradually extends to the edge of the blastodisc, which we now call the blastoderm.

The blastodisc refers to a round single-cell layer of cells inside the blastula from which the embryo is going to form.

In amniote animal embryology, the epiblast is a tissue type derived either from the blastodisc in reptiles (incl.

The germinal disc, also called the blastodisc, is a small, circular, white spot (approximately 2-3 mm across) on the surface of the yellow yolk of a bird's egg.

The epiblast, a single epithelial layer blastodisc, is the source of all embryonic material in amniotes and some of its cells will give rise to the primitive streak.

In chick development, the primitive knot starts as a regional knot of cells that forms on the blastodisc immediately anterior to where the outer layer of cells will begin to migrate inwards - an area known as the primitive streak.