has part has part has_part in taxon develops from develops from surrounds surrounds has developmental contribution from has developmental contribution from Amniota amnion 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 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