The thin innermost layer of the extraembryonic membranes that contains the amniotic fluid; the membrane forms a closed sac in which the embryo and later, the fetus, is suspended and protected. [ MP:0005029 http://www.informatics.jax.org/accession/csmith ]
Term information
- BTO:0000065
- CALOHA:TS-0033
- VHOG:0000721
- FMA:80223
- null:http://linkedlifedata.com/resource/umls/id/C0002630
- EMAPA:16109
- MESH:A16.254.403.277
- GAID:1298
- UMLS:C0002630 (ncithesaurus:Amnion)
- null:http://en.wikipedia.org/wiki/Amnion
- NCIT:C12365
- null:http://www.snomedbrowser.com/Codes/Details/181457005
- EHDAA:136
- EV:0100122
- EHDAA2:0000116
pheno_slim
The thin innermost layer of the extraembryonic membranes that contains the amniotic fluid; the membrane forms a closed sac in which the embryo and later, the fetus, is suspended and protected.
A thin but tough extraembryonic membrane of reptiles, birds and mammals that lines the chorion and contains the fEtus and the amniotic fluid around it. [Biology_Online][VHOG]
Structures homologous to the four extraembryonic membranes of reptiles and birds appear in mammals: amnion, chorion, yolk sac, and allantois.[well established][VHOG]
Term relations
- extraembryonic membrane
- mesoderm-derived structure
- has part some amniotic mesoderm
- has part some amniotic ectoderm
- only in taxon some Amniota
- has developmental contribution from some somatic layer of lateral plate mesoderm
- surrounds some embryo
- develops from some amniotic fold
- has developmental contribution from some ectoderm