The ventral nerve cord is covered externally by a peritoneum.

腹神经线外被以腹膜。

RESULTS Neurofibroma normally grows in two ways: along nerve cord and in plexiform.

结果神经纤维瘤常见沿神经干生长及丛状生长二种类型。

The soft anatomy of conodont shows some soft tissues including eyes, notochord, nerve cord, myomeres and caudal fin.

英国古生物学家们通过牙形石动物的软体解剖学研究，发现眼睛、脊索、神经索、肌肉组织、尾鳍等软组织；

A central nervous system-in which specialised sensory and motor nerve cells are clumped together into a nerve cord and brain-is usually the mark of more recent evolution.

中央神经系统通常是更具现代特征的进化标志，因为其中有一些感觉神经细胞与行动神经细胞，它们牢牢地结合在一起组成了神经索与大脑。

The ventral nerve cord of the crab in the embryo included 1 pair mandibular neuromere, 2 pairs neuromeres of maxillae, 2 pairs neuromeres of maxillipede and abdomen nerve cord.

三疣梭子蟹胚胎期腹神经链由1对大颚、2对小颚和2对颚足所对应的神经节以及腹部神经链组成。