vitelline membrane

vitelline membrane
noun Date: 1845 a membrane enclosing an egg that comprises the zona pellucida in mammals and that upon fertilization splits off from the surface of the egg forming a fertilization membrane in many invertebrates and amphibians and in some fish

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • vitelline membrane — n a membrane enclosing the egg proper and corresponding to the plasma membrane of an ordinary cell * * * the cytoplasmic, noncellular membrane surrounding an oocyte …   Medical dictionary

  • Vitelline membrane — Infobox Embryology Name = Vitelline membrane Latin = m. vitellina GraySubject = 5 GrayPage = 45 Caption = Caption2 = System = CarnegieStage = Days = Precursor = GivesRiseTo = MeshName = Vitelline+membrane MeshNumber = A16.631.886 DorlandsPre = m… …   Wikipedia

  • vitelline membrane — a membrane, product of the ooplasmic surface which adheres closely to the outer boundary of the ooplasm, but as fertilization separates from the surface as a distinct membrane …   Dictionary of ichthyology

  • vitelline membrane — noun : a membrane enclosing the egg proper and corresponding to the cell wall of an ordinary cell; especially : a membrane separated from the surface of the egg in many invertebrates immediately the egg is fertilized, thus preventing other… …   Useful english dictionary

  • vitelline membrane — A membrane enclosing eggs of invertebrates located within an egg shell …   Dictionary of invertebrate zoology

  • vitelline membrane — The membrane, usually of protein fibres, immediately outside the plasmalemma of the ovum and the earlier stages of the developing embryo. Its structure and composition vary in differing animal groups …   Dictionary of molecular biology

  • vitelline membrane — the membrane surrounding the egg yolk. [1835 45] * * * …   Universalium

  • vitelline membrane — noun Embryology a transparent membrane surrounding and secreted by the fertilized ovum, preventing the entry of further spermatozoa …   English new terms dictionary

  • vitelline membrane — vitel′line mem′brane n. cbl the membrane surrounding an egg yolk • Etymology: 1835–45 …   From formal English to slang

  • vitelline membrane — /vəˈtɛlən mɛmbreɪn/ (say vuh teluhn membrayn) noun the membrane surrounding the egg yolk …   Australian English dictionary

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