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 [ MGI:csmith MP:0005029 ]
术语信息
- Wikipedia:Amnion
- FMA:80223
- CALOHA:TS-0033
- MESH:A16.254.403.277
- NCIT:C12365
- EHDAA:136
- EV:0100122
- EMAPA:16109
- BTO:0000065
- GAID:1298
- SCTID:181457005
- VHOG:0000721
- EHDAA2:0000116
- UMLS:C0002630 (ncithesaurus:Amnion)
pheno_slim
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]
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
术语关系
- extraembryonic membrane
- mesoderm-derived structure
- has part some amniotic mesoderm
- has part some amniotic ectoderm
- has developmental contribution from some somatic layer of lateral plate mesoderm
- only in taxon some Amniota
- develops from some amniotic fold
- surrounds some embryo
- has developmental contribution from some ectoderm