1. Any of the blastomeres of an embryo from which the endoderm develops. 
   内胚层指任何可生长成内胚层的胚胎分裂球
2. Derived from two embryonic germ layers, the ectoderm and the endoderm. Used of lower invertebrates, such as sponges and coelenterates. 
   双胚层的具有两个胚层（外胚层和内胚层）的。用于低等无脊椎动物，如寄生虫和腔肠动物
3. The middle embryonic germ layer, lying between the ectoderm and the endoderm, from which connective tissue, muscle, bone, and the urogenital and circulatory systems develop. 
   中胚层中间胚芽层，位于外胚层和内胚层之间，最终发育成结缔组织、肌肉、骨骼、泌尿系统及循环系统
4. An embryo at the stage following the blastula, consisting of a hollow, two-layered sac of ectoderm and endoderm surrounding an archenteron that communicates with the exterior through the blastopore. 
   原肠胚一种囊胚之后的胚胎，含有中空、两层的外胚层和内胚层，包围着通过胚孔跟外界交流的原肠

查看更多例句 相关情景会话

• 1. 内胚层
  endocytosis 胞吞（作用）...endoderm 内胚层...endodermis 内皮层[见于植物]
  www.shuyu.org - 相关搜索
• 2. 内层；内胚层
  下内小尖 endoconulid...内层；内胚层 endoderm...内皮层 endodermis
  www.scientrans.com - 相关搜索
• 3. 内胚叶
  内胚层型endomorphy...内胚叶endoderm...内胚叶性构成的endomorphic
  www.b2b99.com - 相关搜索
• 4. 內胚層
  endocytosis 細胞內吞作用；胞吞作用...endoderm 內胚層...endoderm lamella 內胚層板
  bbs3.nsysu.edu.tw - 相关搜索