Epiblast

Epiblast

Infobox Embryology
Name = PAGENAME
Latin =
GraySubject =
GrayPage =


Caption = Section through the embryo. (Epiblast visible but not labeled.)


Caption2 = Cell differentiation
System =
CarnegieStage = 3
Days = 8
Precursor = inner cell mass
GivesRiseTo = ectoderm, mesoderm
MeshName =
MeshNumber =
DorlandsPre = e_11
DorlandsSuf = 12336502
In embryology, the epiblast is a tissue type derived from the inner cell mass. It lies above the hypoblast.

In mammalian embryogenesis, the columnar cells of the epiblast are adjacent to the trophoblast, while the cuboidal cells of the hypoblast are closer to the Blastocoele. The epiblast, whilst referred to as the primary ectoderm, differentiates to form all three layers of the trilaminar embryonic disc in a process called gastrulation.

ee also

*Embryogenesis
*Mammalian embryogenesis

External links

* http://www.iscr.ed.ac.uk/images/tilo_kunath/Tilo-Web-figure-1.gif
* http://www.embryology.ch/allemand/iperiodembry/carnegie02.html
* http://www.med.umich.edu/lrc/coursepages/M1/embryology/embryo/04secondweek.htm
* http://isc.temple.edu/marino/embryology/EMBII97/sld005.htm


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Look at other dictionaries:

  • Epiblast — Ep i*blast, n. [Pref. epi + blast.] (Biol.) The outer layer of the blastoderm; the ectoderm. See {Blastoderm}, {Delamination}. [1913 Webster] …   The Collaborative International Dictionary of English

  • Epiblást — Epiblást, s. Keimblätter …   Meyers Großes Konversations-Lexikon

  • Epiblást — (grch.), s. Gastrula …   Kleines Konversations-Lexikon

  • epiblast — EPIBLÁST s. n. cotiledon rudimentar la monocotiledonate. (< fr. épiblaste) Trimis de raduborza, 15.09.2007. Sursa: MDN …   Dicționar Român

  • epiblast — [ep′i blast΄] n. [ EPI + BLAST] the outer layer of cells of an embryo …   English World dictionary

  • Epiblast — Dieser Artikel wurde aufgrund von formalen und/oder inhaltlichen Mängeln in der Qualitätssicherung Biologie zur Verbesserung eingetragen. Dies geschieht, um die Qualität der Biologie Artikel auf ein akzeptables Niveau zu bringen. Bitte hilf mit,… …   Deutsch Wikipedia

  • epiblast — noun Date: 1875 the outer layer of the blastoderm ; ectoderm • epiblastic adjective …   New Collegiate Dictionary

  • epiblast — the outer of two layers of the blastoderm that form during gastrulation. Corresponds to the primitive ectoderm during gastrulation and to the definitive ectoderm after gastrulation …   Dictionary of ichthyology

  • epiblast — n. [Gr. epi, upon; blastos, bud] Ectoderm, the outer germ layer in early embryos; ectoblast …   Dictionary of invertebrate zoology

  • epiblast — epiblastic, adj. /ep euh blast /, n. Embryol. the primordial outer layer of a young embryo before the segregation of the germ layers, capable of becoming the ectoderm and containing cells capable of becoming the mesoderm and endoderm. [1865 70;… …   Universalium

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