Card Set Information
zygote divides into blastomeres in ?
end of cleavage ?
end of gastrulation ?
germ layer form gastrula
isolecithal egg ?
mesolecithal egg ?
telolecithal egg ?
centrolecithal egg ?
holoblastic cleavage ?
entire egg is cleaved during cytokinesis
meroblastic cleavage and type ?
: discoidal and superficial cleavage
what is meridional cleavage in cytokinesis of sea urchin ?
cleavage furrow pass through animal and vegetal poles
what is equatorial cleavage of sea urchin egg ?
perpendicular to animal and vegetal pole
equal cytokenesis at animal cells ?
daughter cells of equal size
unequal cytokenesis at vegetal pole?
daughter cells of unequal size
fluid filled region called ?
cleavage pattern of sea urchin egg is ?
radial cleavage ?
what is the same between sea urchin and animals cleavage ?
holoblastic and radially symmectric
what shape of third cleavage in amphibian ?
morula in amphibian ?
cytokinesis in blastomere is unequal
at 128 cells stage what appear in amphibians
blastocoel cavity appear
what forms when outermost cells become polarized ?
tight junction cells joint together
gap junction communicate channels
desmosomes form epithelium
mammals at 8 cells stage, embryo undergoes ?
blastomeres stick together to form solid ball of cells
each blastomere undergoes polarization
tight junction is formed beneath external surface to stop material enter embryo
gap juntion is formed between internal surfaces to communicate with cytoplasm another
process formation of fluid filled cavities inside embryo called ?
what interact with wall of uterus ?
what cells form embryo proper ?
inner cell mass ICM