chorion membrane
The outermost extraembryonic membrane of amniotes. [ MESH:A10.615.284.473 http://orcid.org/0000-0002-6601-2165 https://github.com/geneontology/go-ontology/issues/22603 MP:0002836 ]
Synonyms: embryonic chorion, chorion, uterine chorion, fetal chorion, chorion (vertebrates)
Term info
- EHDAA2:0000245
- VHOG:0000200
- UMLS:C1516505 (ncithesaurus:Chorionic_Sac)
- NCIT:C34124
- EMAPA:16112
- MESH:D002823
- EV:0100121
- BTO:0000252
- EHDAA:150
- EFO:0002780
- GAID:1299
- FMA:80224
- UMLS:C0008503 (ncithesaurus:Chorion)
- NCIT:C34122
- Wikipedia:Chorion
- CALOHA:TS-0144
uberon_slim, efo_slim, pheno_slim, human_reference_atlas
The outer membrane of the two membranes enclosing the embryo in reptiles, birds, and mammals. In placental mammals it contributes to the development of the placenta[BTO:0000252]., The outer membrane enclosing the embryo in reptiles, birds, and mammals. [TFD][VHOG]
Structures homologous to the four extraembryonic membranes of reptiles and birds appear in mammals: amnion, chorion, yolk sac, and allantois.[well established][VHOG]
chorionic
The chorion of placentals is bilaminar as in reptiles and birds, but forms from the trophoblast and includes the ajdacent mesodermal layer [ISBN:0073040584]
Extra-embryonic ectoderm
This term refers to the amniote structure. It is distinct from the concept of chorion in insects
http://upload.wikimedia.org/wikipedia/commons/5/51/Gray24.png
chorionic sac, chorion frondosum
uberon
UBERON:0003124
Chorion
http://purl.obolibrary.org/obo/NCBITaxon_9606
Term relations
- extraembryonic membrane
- mesoderm-derived structure
- has part some chorionic mesenchyme
- only in taxon some Amniota
- develops from some amniotic fold
- has part some chorionic ectoderm
- adjacent_to some embryo