has part has_part anatomical structure 解剖结构 embryonic structure 胚胎结构 conceptus 孕体 The embryo and its adnexa (appendages or adjunct parts) or associated membranes (i.e. the products of conception) The conceptus includes all structures that develop from the zygote, both embryonic and extraembryonic. It includes the embryo as well as the embryonic part of the placenta and its associated membranes - amnion, chorion (gestational sac), and yolk sac[WP]. embryo plus adnexa 胚胎及其附属物（附属物或附属部分）或相关的膜（即受孕的产物）这个概念包括由合子发育而来的所有胚胎和胚外胚胎的结构。它包括胚胎以及胎盘的胚胎部分及其相关的膜-羊膜、绒毛膜（孕囊）和卵黄囊[WP]。 胚胎附属物 entire extraembryonic component 整个胚外组分