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单词 blastula
释义
blastula
noun[C]
biologyspecialized
uk/ˈblæs.tʃə.lə/us/ˈblæs.tʃə.lə/
pluralblastulasorblastulaeuk/ˈblæs.tʃə.liː/
the earlystageofdevelopmentof ananimal, consisting of alayerofcellsaround ahollowspace:
Inanimals,cleavageresultsin theformationof a blastula.
Blastulae werepreparedbyincubationof thefertilizedeggsatroomtemperaturefor 6-10hours.
Related words
blastocyst
blastocoel
More examples
  • The blastula gives novisibleindicationof thecomplexanimalinto which it willdevelop.
  • Ovineeggsand blastulaslookvery likebovineonesinmorphologyandpigmentation.
  • Thissimplestructure, the blastula, must now bemouldedbycellularactivitiesinto all theshapesthatemergeduringdevelopment.
SMART Vocabulary: related words and phrases
Animal reproduction
  • androgen
  • anti-oestrogen
  • asexuality
  • asexually
  • barrenness
  • calf
  • embryology
  • fertility
  • fertilize
  • fetal
  • infertile
  • procreative
  • propagation
  • rebreed
  • remate
  • repopulate
  • reproductive
  • semen
  • spawning ground
  • sterility
See more results »

You can also find related words, phrases, and synonyms in the topics:

Cells
(Definition ofblastulafrom theCambridge Advanced Learner's Dictionary & Thesaurus© Cambridge University Press)

Examplesofblastula

blastula
In this study, the relationship between intact septate junctions and the ability of the sea urchinblastulaepithelium to function as an occluding barrier was examined.
From theCambridge English Corpus
The first three to four months are spent with theblastulain suspended development before it implants itself in the placenta.
From
Wikipedia
Creatives commons iconThis example is from Wikipedia and may be reused under a CC BY-SA license.
A common feature of a vertebrateblastulais that it consists of a layer of blastomeres, known as the blastoderm, which surrounds the blastocoele.
From
Wikipedia
Creatives commons iconThis example is from Wikipedia and may be reused under a CC BY-SA license.
This leads to the specification of non-neural ectoderm and later in theblastulastage to anmioserosa.
From
Wikipedia
Creatives commons iconThis example is from Wikipedia and may be reused under a CC BY-SA license.
Invagination of theblastulaoccurs when the endoderm loses its affinity towards hyalin, while the ectoderm retains it.
From
Wikipedia
Creatives commons iconThis example is from Wikipedia and may be reused under a CC BY-SA license.
All animals develop from ablastula: consequences of an undervalued definition for thinking on development.
From theCambridge English Corpus
The matureblastulaepithelium is impermeable to macromolecules; however, brief depletion of divalent cations renders the epithelium permeable.
From theCambridge English Corpus
At the morula andblastulastages, a group of micromeres at the animal pole showed immunoreactivity.
From theCambridge English Corpus
The youngblastula-like stages developed into tubular forms with inner and outer cell layers forming the body wall.
From theCambridge English Corpus
The architectural features of theblastulaepithelium responsible for these permeability characteristics are not known.
From theCambridge English Corpus
Tight junctions regulate the barrier to paracellular permeability in chordate epithelia; however, the sea urchinblastulaepithelium lacks tight junctions and instead possesses septate junctions.
From theCambridge English Corpus
Ganglioside synthesis began at theblastulastage (stage 8) and increased gradually, reaching a maximum during gastrulation (stages 10-12).
From theCambridge English Corpus
Ganglioside synthesis began at theblastulastage and reached a maximum during gastrulation (stages 10-12).
From theCambridge English Corpus
Middleblastulastage was selected for actin filament densitometry comparison (as 1) and compared with other embryo stages.
From theCambridge English Corpus
Blastulapreparation by in vitro production systems displays great advantages, particularly for solving litter size and season limitation in large livestock.
From theCambridge English Corpus
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
#https://dictionary.cambridge.org//dictionary/english/blastula##
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更新时间：2024/12/28 0:24:08