7 The strobila of cestodes consists of a chain of segments (proglottids) budded off from the neck region.
绦虫节裂区由从颈部出芽生节链(节片)成。
In the embryo an undifferentiated mesodermal component of an early trunk or tail segment or metamere, derived from paraxial mesoderm.
在胚胎,无法区别中胚层成早期躯干、或尾部片段或节,衍生自轴旁中胚层。
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Like these two animals, its body is made up of a number of rings.
跟龙虾和虾一样,螃蟹的体也是很多体节组成的。
And metanephridia will have a nephrostome on onside of a segment.
管在体节的一侧具有口。
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