Organism at the blastula stage - an early stage of embryonic development in animals. It is produced by cleavage of a fertilized ovum and consists of a spherical layer of around 128 cells surrounding a central fluid-filled cavity called the blastocoel. The blastula follows the morula and precedes the gastrula in the developmental sequence. [ http://en.wikipedia.org/wiki/Blastula ]
Synonyms: blastula embryo
Term information
- MESH:D036703
- BTO:0000128
- OpenCyc:Mx4rEetFnKP2EdqAAAACs4vPlg
- Wikipedia:Blastula
- OGEM:000006
- GAID:1294
- BILA:0000059
inconsistent_with_fma
TODO - check relationship with epiblast. Note in FMA this is not a subclass of embryo, but in uberon embryo is the whole organism from zygote onwards and thus includes the blastula
Term relations
- multicellular organism
- embryo
- existence starts and ends during some blastula stage
- develops from some cleaving embryo