gastrula


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gas·tru·la

 (găs′trə-lə)
n. pl. gas·tru·las or gas·tru·lae (-lē′)
An embryo at the stage following the blastula, after the movement of cells results in the formation of the three germ layers, ectoderm, mesoderm, and endoderm.

[New Latin : Greek gastēr, gastr-, belly + Latin -ula, feminine diminutive suff.]

gas′tru·lar (-lər) adj.

gastrula

(ˈɡæstrʊlə)
n, pl -las or -lae (-ˌliː)
(Biology) a saclike animal embryo consisting of three layers of cells (ectoderm, mesoderm, and endoderm) surrounding a central cavity (archenteron) with a small opening (blastopore) to the exterior. See also ectoderm, mesoderm, endoderm
[C19: New Latin: little stomach, from Greek gastēr belly]
ˈgastrular adj

gas•tru•la

(ˈgæs trʊ lə)

n., pl. -las, -lae (-ˌli)
an embryo in an early stage of development during which the blastula differentiates into two cell layers and the central cavity becomes the archenteron.
[1875–80]
gas′tru•lar, adj.
gas`tru•la′tion, n.

gas·tru·la

(găs′trə-lə)
Plural gastrulas or gastrulae (găs′trə-lē′)
An embryo at the stage following the blastula, in which the cells are distributed into layers that eventually develop into the organs of the body. Compare blastula.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.gastrula - double-walled stage of the embryo resulting from invagination of the blastulagastrula - double-walled stage of the embryo resulting from invagination of the blastula; the outer layer of cells is the ectoderm and the inner layer differentiates into the mesoderm and endoderm
conceptus, fertilized egg, embryo - an animal organism in the early stages of growth and differentiation that in higher forms merge into fetal stages but in lower forms terminate in commencement of larval life
archenteron - central cavity of the gastrula; becomes the intestinal or digestive cavity
Translations
gastrula

gas·tru·la

n. gástrula, etapa primitiva del desarrollo embriónico.
References in periodicals archive ?
Zinc transporter LIVI controls epithelial-mesenchymal transition in zebrafish gastrula organizer.
1I) with limited movement appeared at 5 h (100%); then the blastula suffered invaginations to give rise to an early gastrula (Fig.
Upon passage of eight hours, a gastrula was formed and its epiboly started to extend toward the vegetal pole (Fig.
Using zebrafish as a vertebrate model organism, we will explore how germ layer progenitor cell fate specification affects the physical processes by which the gastrula takes shape, and, vice versa, how alterations in cell/tissue mechanics feed back onto the gene regulatory networks and signals controlling progenitor cell fate specification during gastrulation.
Estos fueron registrados en una hembra colectada en diciembre con tres embriones en estadio de gastrula inicial (E.
Gastrula stage took place from 20th h up to 40th h after post fertilization (2dpf) which is described as germ ring presence surrounding the margin of blastoderm and embryonic cover, that metamorphic from germ ring to animal pole to forming neural duct.
Egg viability was measured at late gastrula stage (~12 h post-fertilization (hpf)) in a sample of ~260 embryos (Zaniboni-Filho, 1992; Rizzo et al.
Experimental treatments: A total of 25 embryos in gastrula stage, Gosner stage ten (Gosner, 1960), for each species of R.
Once the blastula reach the pluteuslarval phase through gastrula and prism stages (Figure2), the culture was examined daily and numbers of larva developed into each 2-and 4-arm pluteus stage (Figure2) were counted by sub-sampling techniques.
El tiempo transcurrido desde la fecundacion hasta la eclosion fue de 36:13 h; durante este tiempo el embrion atraveso por los siguientes periodos: cigoto, clivaje (blastula), gastrula, segmentacion y organogenesis, eclosion y estado larval.
Samples from different developmental stages (ovary; young oocytes; full-grown oocytes; mature oocytes; hatched blastula 19 hours post-fertilization (hpf); early gastrula 23 hpf; mid-gastrula 40 hpf; late gastrula 48 hpf; early larva 74 hpf; and late larva 164 hpf) were collected, fixed, and stored in 70% ethanol at -20 [degrees]C, as previously described (Arenas-Mena et al.
The early gastrula was observed 02 h 40 min AF (Figure 1a), and the 100% epiboly stage was observed 05 h 10 min AF (Figure 1g).