- bilaminar blastoderm
- the stage of development in which the embryo is represented by two primary layers: the ectoderm and the endoderm. See gastrula.
Medical dictionary. 2011.
bilaminar blastoderm
Look at other dictionaries:
blastoderm, blastoderma — The thin, disk shaped cell mass of a young embryo and its extraembryonic extensions over the surface of the yolk; when fully formed, all three primary germ layers (ectoderm, endoderm, and mesoderm) are present … Medical dictionary
Regional specification — In the field of developmental biology, regional specification is the process by which different areas are identified in the development of the early embryo. The process by which the cells become specified differs between organisms. Contents 1… … Wikipedia
epiblast — Gives rise to the ectoderm, mesoderm, and endoderm of the embryo proper. [epi + G. blastos, germ] * * * epi·blast ep ə .blast n the outer layer of the blastoderm: ECTODERM epi·blas·tic .ep ə blas tik … Medical dictionary
membrane — 1. A thin sheet or layer of pliable tissue, serving as a covering or envelope of a part, as the lining of a cavity, as a partition or septum, or to connect two structures. SYN: membrana [TA]. 2. SYN: biomembrane. [L. membrana, a skin or m … Medical dictionary
