blastula /blas·tu·la/ (blas´tu-lah) pl. blas´tulae [L.] the usually spherical structure produced by cleavage of a zygote, consisting of a single layer of cells (blastoderm) surrounding a fluid-filled cavity (blastocoele).
blastula
blas·tu·la (bl s ch -l)n. pl. blas·tu·las or blas·tu·lae (-l   ) An early embryonic form produced by cleavage of a fertilized ovum and consisting of a spherical layer of cells surrounding a fluid-filled cavity. blas tu·lar adj.blas tu·lation (-l shn) n. |
blastula
[blas′tyələ]
Etymology: Gk, blastos, germ
an early stage of the process through which a zygote develops into an embryo, characterized by a fluid-filled sphere formed by a single layer of cells. The spheric layer of cells is called a blastoderm; the fluid-filled cavity is the blastocoele. The blastula develops from the morula stage and is usually the form in which the embryo becomes implanted in the wall of the uterus. Also called blastosphere.
blastula
the usually spherical body produced by cleavage of a fertilized ovum, consisting of a single layer of cells (blastoderm) surrounding a fluid-filled cavity (blastocoele); it follows the morula stage.
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