ON TRIGGERING AND CONTROL OF CNIDOCYST DISCHARGE
ON TRIGGERING AND CONTROL OF CNIDOCYST DISCHARGE
复制标题
DOI：
10.1080/10236248009386975
复制
发表时间：
1980-01-01
期刊：
影响因子：
--
通讯作者：
CARRE, C
中科院分区：
文献类型：
--
作者：
CARRE, D;CARRE, C
对几种浮游腔肠动物的超微结构和体内观察表明，总是与受体极（丝轴本身或附属感觉细胞）相关联的丝胞可能与神经系统没有联系，也可能与神经系统有关。泡丝管的丝胞可分为两类受体-效应器，均对丝胞接受的刺激敏感。第一类是具有防御功能的刺胞细胞，定位于肺细胞、颈细胞和苞片上，与神经系统无联系，是典型的独立受体效应器。第二类分布在鱼触须和腹类动物上，暗示着捕食功能，与神经系统有关，神经系统可以调节或控制它们的兴奋阈值。根据它们的功能，刺胞细胞可能与神经系统有关，也可能与神经系统无关，这是大多数刺胞动物中一个困难且长期争论的问题。
Ultrastructural and in vivo observations in several planktonic coelenterates show that the cnidocystes, always associated with a receptor pole (the cnidocil itself or an accessory sensory cell) may have no link with the nervous system, or may be associated with it. The cnidocytes of physonect siphonophores can be placed in 2 categories of receptor-effectors both sensitive to stimuli received by the cnidocil. The cnidocytes of the 1st category, with defensive functions, localized on the pneumatophore, nectophores and bracts, have no link with the nervous system and are typical independent receptor-effectors. Those of the 2nd category whose distribution on the fishing tentacles and gastrozoids, implies predatory functions, are connected with the nervous system which may modulate or control their thresholds of excitability. Depending on their function, the cnidocytes may or may not be linked with the nervous system, a difficult and long debated question in most of the cnidarians.