Blastulation
the early developmental stage of an animal, following the morula stage and consisting of a single, spherical layer of cells enclosing a hollow, central cavity.
noun
(embryol) the process of blastula formation
noun (pl) -las, -lae (-liː)
an early form of an animal embryo that develops from a morula, consisting of a sphere of cells with a central cavity Also called blastosphere
n.
blas’tu·lar adj.
blas’tu·la’tion (-lā’shən) n.
blastula
(blās’chə-lə)
Plural blastulas or blastulae (blās’chə-lē’)
An animal embryo at the stage immediately following the division of the fertilized egg cell, consisting of a ball-shaped layer of cells around a fluid-filled cavity known as a blastocoel. Compare gastrula. See also blastocyst.
blastula [(blas-chuh-luh)]
Note: This is the stage of development where embryonic stems cells can be harvested for medical research.
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