blastulas

blastulas
n. (Embryology) cavity surrounded by a single layer of cells (first stage in the life of an embryo)

English contemporary dictionary. 2014.

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  • blastula — {{hw}}{{blastula}}{{/hw}}s. f. (biol.) Stato della segmentazione dell uovo in cui i blastomeri sono disposti a delimitare una cavità centrale …   Enciclopedia di italiano

  • Ontogenia — La ontogenia (también llamada morfogénesis u ontogénesis) describe el desarrollo de un organismo, desde el óvulo fertilizado hasta su senescencia, pasando por la forma adulta. La ontogenia es estudiada por la biología del desarrollo. La ontogenia …   Wikipedia Español

  • Blástula — Saltar a navegación, búsqueda La blástula es un estado temprano del desarrollo embrionario en los animales; en los mamíferos recibe el nombre de blastocito. La blástula sigue a la mórula y precede a la gástrula en la secuencia de desarrollo. Una… …   Wikipedia Español

  • blastula — blastular, adj. blastulation /blas cheuh lay sheuhn/, n. /blas cheuh leuh/, n., pl. blastulas, blastulae / lee /. Embryol. the early developmental stage of an animal, following the morula stage and consisting of a single, spherical layer of cells …   Universalium

  • blastulation — noun The process of forming blastocoeles and blastulas …   Wiktionary

  • EMBRYOGENÈSE ANIMALE — Chez les animaux, l’œuf est une cellule unique, souvent de grande dimension, à noyau digamétique, c’est à dire formé par l’assemblage des noyaux des cellules reproductrices ou gamètes. Le cytoplasme cellulaire renferme des réserves plus ou moins… …   Encyclopédie Universelle

  • blastula — [ blastjʊlə] noun (plural blastulae li: or blastulas) Embryology an animal embryo at the early stage of development when it is a hollow ball of cells. Origin C19: mod. L., from Gk blastos sprout …   English new terms dictionary

  • blastula — /ˈblæstʃələ/ (say blaschuhluh) noun (plural blastulae /ˈblæstʃəˌli/ (say blaschuh.lee) or blastulas) an early developmental stage of a metazoan embryo, consisting in typical cases of a hollow sphere formed by a single layer of cells. {New Latin,… …  

  • blastula — [blas′tyo͞o lə] n. pl. blastulas or blastulae [blas′tyo͞olē΄] [ModL, dim. < Gr blastos, a sprout] an embryo at the stage of development in which it consists of usually one layer of cells around a central cavity, forming a hollow sphere… …   English World dictionary

  • blastula — n. (pl. blastulae or US blastulas) Biol. an animal embryo at an early stage of development when it is a hollow ball of cells. Etymology: mod.L f. Gk blastos sprout …   Useful english dictionary

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