n. in embryology, refers to a single layer of cells formed after cleavage of the zygote or fertilized egg. Spherical in form, this cell layer (blastoderm) surrounds a fluid-filled cavity (blastocoele).
BLASTULA: "A blastula is an early form of the embryo that develops after cleavage of the zygote and before gastrulation."
Cite this page: N., Sam M.S., "BLASTULA," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/blastula/ (accessed March 22, 2023).
