the outermost extraembryonic membrane [ MESH:A10.615.284.473 MP:0002836 ]
术语信息
- EV:0100121
- MESH:A16.254.403.473
- EHDAA2:0000245
- EFO:0002780
- EHDAA:150
- VHOG:0000200
- EMAPA:16112
- NCIT:C34122
- UMLS:C0008503 (ncithesaurus:Chorion)
- Wikipedia:Chorion
- FMA:80224
- UMLS:C1516505 (ncithesaurus:Chorionic_Sac)
- GAID:1299
- NCIT:C34124
- BTO:0000252
- CALOHA:TS-0144
uberon_slim, efo_slim, pheno_slim
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]
The chorion of placentals is bilaminar as in reptiles and birds, but forms from the trophoblast and includes the ajdacent mesodermal layer [ISBN:0073040584]