embryonic disc — embryonic disc, the part of the inner cell mass of the blastula from which the embryo develops. It is located between two cavities, the amniotic cavity and the yolk sac. It consists of three germ layers, the ectoderm, the mesoderm, and the… … Useful english dictionary
embryonic disc — the early embryo before the formation of somites. It is a flat disc of tissue bounded dorsally by the amniotic cavity and ventrally by the yolk sac. The formation of the primitive streak and archenteron in the embryonic disc determines the… … The new mediacal dictionary
embryonic plate — embryonic plate, = embryonic disc. (Cf. ↑embryonic disc) … Useful english dictionary
embryonic disk — or embryonic disc n 1 a) BLASTODISC b) BLASTODERM 2) the part of the inner cell mass of a blastocyst from which the embryo of a placental mammal develops called also embryonic shield … Medical dictionary
Embryonic disk — Infobox Embryology Name = PAGENAME Latin = GraySubject = 6 GrayPage = 47 Caption = Section through embryonic disk of Vespertilio murinus. Caption2 = Surface view of embryo of a rabbit. (After Kölliker.) arg. Embryonic disk. pr. Primitive streak.… … Wikipedia
embryonic shield — the double layered disc from which the embryo proper develops; see embryonic disc, under disc … Medical dictionary
Диск Эмбриональный (Embryonic Disc) — ранний эмбрион на стадии развития до образования сомитов. Эмбриональный диск представляет собой плоский диск, связанный дорсально амниотической полостью и вентрально с желточным мешком. Образование первичной полоски и архэнтерона в эмбриональном… … Медицинские термины
embryonic area — see under disc … Medical dictionary
bilaminar disc — embryonic d … Medical dictionary
Optic disc pit — An optic disc pit is a congenital excavation (or regional depression) of the optic nerve head resulting from a malformation during development of the eye. Optic pits are important because they are associated with posterior vitreous detachments… … Wikipedia
