Outermost layer of cells in the blastodermic vesicle, which will develop into the trophoblast layer and then contact the endometrium and take part in establishing the embryo's means of nutrition. [ MP:0005028 ]
Term information
- BTO:0001840
- VHOG:0000979
- EHDAA:56
- EHDAA2:0002091
- EMAPA:16046
pheno_slim, early_development
The outer cellular layer of the mammalian blastocyst. [Evolution, Fourth_Edition_(2006)_McGraw-Hill, Function, Vertebrates:_Comparative_Anatomy, p.750, see_Kardong_KV][VHOG]
(...) the trophoblast develops rapidly so that contact may be made with the maternal uterine tissues when conditions are appropriate. We have here an excellent example of an embryonic adaptation, the development of a structure never present in either adult or embryo of 'lower' vertebrates.[well established][VHOG]
Term relations
- extraembryonic tissue
- unilaminar epithelium
- part of some extraembryonic membrane
- has part some trophectodermal cell
- develops from some morula