has part develops from surrounds has developmental contribution from Homo sapiens amnion http://upload.wikimedia.org/wikipedia/commons/e/e7/Gray14.png https://cdn.humanatlas.io/digital-objects/ref-organ/placenta-full-term-female/v1.1/assets/3d-vh-f-placenta-full-term.glb EV:0100122 SCTID:181457005 UBERON:0000305 MESH:D000650 CALOHA:TS-0033 amnios EMAPA:16109 Wikipedia:Amnion VHOG:0000721 EHDAA:136 BTO:0000065 EHDAA2:0000116 NCIT:C12365 FMA:80223 GAID:1298 UMLS:C0002630 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. embryo ectoderm amniotic ectoderm amniotic mesoderm somatic layer of lateral plate mesoderm extraembryonic membrane amniotic fold