CHE SIGNIFICA BLASTULA IN INGLESE
blastula
La blastula (dal greco βλαστός (blastos), che significa "germoglio") è una sfera vuota di cellule, denominate blastomeri, che circondano una cavità interamente fluida chiamata blastocoele formata durante una fase iniziale dello sviluppo embrionale negli animali. Lo sviluppo dell'embrione inizia con uno spermatozoo che feconda un uovo per diventare uno zigoto che subisce molte fenditure per svilupparsi in una palla di cellule chiamata morula. Solo quando viene formata la blastocoele, il primo embrione diventa un blastula. La blastula precede la formazione della gastrula in cui gli strati germinali dell'embrione formano. Una caratteristica comune di una blastula vertebrata è costituita da uno strato di blastomeri, noto come blastoderma, che circonda la blastocoele. Nei mammiferi la blastula viene definita blastocista. La blastocisti contiene un embrioblasto (o massa cellulare interna) che darà finalmente origine alle strutture definitive del feto e alla trofoblasto, che continua a formare i tessuti extra-embrionali.
definizione di blastula nel dizionario inglese
La definizione di blastula nel dizionario è una prima forma di un embrione animale che si sviluppa da una morula, costituita da una sfera di cellule con una cavità centrale chiamata anche: blastosfera.
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10 LIBRI IN INGLESE ASSOCIATI CON «BLASTULA»
Scopri l'uso di
blastula nella seguente selezione bibliografica. Libri associati con
blastula e piccoli estratti per contestualizzare il loro uso nella letteratura.
1
Evolutionary Developmental Biology
Such artificially activated eggs undergo the changes listed above, and in some
species continue to develop until the end of cleavage (i.e. until they reach the
blastula stage), when development stops. Stored maternal information within the
egg ...
2
Biology in the Laboratory: With BioBytes 3.1 CD-ROM
111 11 Objectives 11111m111111m11111111111m11111m D Describe the
structure of a typical blastula. D Relate the structure of the frog blastula to the
establishment of the dorso-ventral and antero-posterior axes of the embryo. mn ...
3
Biology: A Functional Approach
animal first cleavage division (vertical) micromeres hollow m _6»- blastocoel
blastula , . , , yolky macromeres Figure 26.6 Cleavage in a typical chordate such
as Amphioxus. Successive vertical and horizontal mitotic divisions of the fertilized
...
4
Hyman's Comparative Vertebrate Anatomy
FOUR CELL animal hemisphere LATE CLEAVAGE vegetal hemisphere
BLASTULA SECTlON OF BLASTULA animal hemisphere EARLY 'CLEAVAGE
blastoderm LATE CLEAVAGE . getal hemisphere 5 5 : • tocoel blastoderm
blastocoel ...
5
Color Atlas of Embryology
Blastula. The cells of the morula form a hollow sphere, the blastula. The cavity of
the blastula is the blastocoel. The blastula possesses an animal and a vegetal
pole. The animal pole of the sea urchin blastula is characterized by a tuft of cilia.
The blastula stage normally is reached as the embryo enters the uterus. The
endoderm is responsible for the gill arches found in the early embryonic states of
vertebrates. In fish, these develop into respiratory organs. In land vertebrates,
they ...
7
Competition Science Vision
The resultant embryo having fluid-filled blastocoel and blastoderm is the blastula
stage of frog. animal polft. micromeres blastocoel vegetal pole EARLY
BLASTULA megameres micromeres megameres V.S. OF BLASTULA
micromeres ...
8
Competition Science Vision
The resultant embryo having fluid-filled blastocoel and blastoderm is the blastula
stage of frog. Animal pole Micromeres Blastocoel Grey crescent THIRD
CLEAVAGE CLEAVAGE 8 CELLS 16 CELLS Fig. : Cleavage in fertilized egg or
zygote ...
9
Pattern Formation in Zebrafish
2 Mid-Blastula Transition and the Beginning of Cell Motility The earliest cell
rearrangements in the zebrafish blastula are the simple result of cell divisions. In
the cleavage-stage embryo, cells divide synchronously and rapidly, every 15min.
Lilianna Solnica-Krezel,
2002
10
Control Mechanisms in Developmental Processes
43 3 Unfertilized — 0.08,* 0.11, 0.161' Fertilized (1 hr) — 0.93 4 Early blastula ~
0.44,* 0.40, 0.531 Fertilized (1 hr) RNase 0.59 24 Early blastula — 038,1“ 042,1
0.40'f 20 Two-cell — 0.57 25 Hatching blastula — 0.45, 0.45 15 Mes. blastula ...
10 NOTIZIE DOVE SI INCLUDE IL TERMINE «BLASTULA»
Vedi di che si parla nei media nazionali e internazionali e come viene utilizzato il termine ino
blastula nel contesto delle seguenti notizie.
Gene expression Transcripts in space
They sequence zebrafish blastula cells and map even rare cell types. Achim et al. offer a complementary approach that requires in situ data for ... «Nature.com, mag 15»
Who's Your Daddy? For Island Shellfish, Honors Go to One Man
“With a quahaug, within hours there is a blastula, a cluster of cells. By tomorrow evening they will be trochophores, which is essentially marine ... «The Vineyard Gazette - Martha's Vineyard News, mag 15»
New origin theory for cells that gave rise to vertebrates
They found that the toolkit used by neural crest cells also is used by pluripotent blastula cells, and they showed that it is essential for ... «Phys.Org, apr 15»
Biologists find algal embryo that “turned itself inside out”
... during which the single-layered blastula is reorganized into a trilaminar (“three-layered”) structure known as the gastrula. Gastrulation is the ... «ZME Science, apr 15»
Chinese scientists create first genetically modified human embryos
That's enough time for the CRISPR enzymes to do their job, and enough time for the embryo to get to the eight-cell blastula stage. There were ... «ExtremeTech, apr 15»
Aristotle Rediscovered: What Exactly Is the "Mechanism" for …
... egg) are very different from the physical properties of a ball of cells (the morula), and a hollow ball (blastula) has different properties again. «Discovery Institute, apr 15»
Spatial reconstruction of single-cell gene expression data
In embryos at the late blastula stage, when cell fate is being decided on the basis .... We tested Seurat and demonstrated its utility using late blastula stage (50% ... «Nature.com, apr 15»
Big Beat: Much to see in National Gallery's show of Governor …
McClure, who teaches in Toronto, created the broach Blastula to represent, in silver and gold, the splitting of stem cells — a controversial ... «Ottawa Citizen, apr 15»
Students Studying Developmental Biology at MDI Biological …
After staring into a microscope for several hours a day, the students have a much better idea what the blastula and gastrula stages look like ... «College of the Atlantic News, apr 15»
Still No Basis for Stretched-Rubbery Theory of Body-Plan Origins …
We are addressing the movements in a blastula, at an early developmental stage. Movements at the blastula stage do not occur by free will of ... «Discovery Institute, mar 15»