An ultrastructural investigation of the hypocerebral organ of the adult Euperipatoides kanangrensis (Onychophora, Peripatopsidae)
An ultrastructural investigation of the hypocerebral organ of the adult Euperipatoides kanangrensis (Onychophora, Peripatopsidae)
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DOI：
10.1016/j.asd.2005.03.002
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发表时间：
2005-10-01
影响因子：
2
通讯作者：
Budd, GE
中科院分区：
文献类型：
--
作者：
Eriksson, BJ;Tait, NN;Budd, GE
卡南棕象甲的下脑器官是位于大脑神经节腹侧的一对球形囊泡。它们在胚胎中发育在触角节中最前面的一对腹器官的前面。每个下脑器官的壁是一个致密的上皮细胞的细长细胞与周围的核。细胞质中含有大量的线粒体、高尔基体和微管。下脑器内的小腔位于器官的偏心位置，内有呈同心圆状分层的电子致密物质，类似于角质层。每个下脑器周围都有一层细胞外基质，与邻近的脑神经节周围的细胞外基质连续。神经节和器官之间没有神经连接，但细胞连接穿过中间基质，可以作为通信途径。脑下器官的超微结构表明它们是腺体。(C)2005爱思唯尔有限公司保留所有权利。
The hypocerebral organs of Euperipatoides kanangrensis are a pair of spherical vesicles located ventral to the cerebral ganglia. They develop in the embryo front the most anterior pair of ventral organs, in the antennal segment. The wall of each hypocerebral organ is a dense epithelium of elongate cells with peripheral nuclei. The cytoplasm of the cells includes numerous mitochondria, Golgi bodies and microtubules. The small lumen, located eccentrically within the organ, contains concentrically layered electron-dense material resembling cuticle.Each hypocerebral organ is enclosed by a layer of extracellular matrix continuous with that surrounding the adjacent cerebral ganglion. There are no nerve connections between ganglion and organ, but cellular connections traverse the intervening matrix and could serve as a communication pathway. The ultrastructure of the hypocerebral organs indicates that they are glands. (C) 2005 Elsevier Ltd. All rights reserved.