The olfactoretinalis system = terminal nerve?
The olfactoretinalis system = terminal nerve?
复制标题
嗅网膜系统=终末神经？
作者：
T. Szabo;S. Blähser;J. Denizot;M. Ravaille
免疫组织化学显示，在几种裸体动物中，有一条与嗅视网膜系统(ORS)不同的终末神经(NT)。ORS的神经节(NOR)是位于嗅神经和嗅球的FMRF-酰胺免疫反应神经元簇。NOR投射到嗅球和视神经，但不投射到嗅觉上皮。相反，NT是一种小的P物质或GnRH免疫反应纤维束，起源于位于嗅上皮吻侧的神经节，与嗅神经一起走在尾部，终止于嗅球内的肾小球。在外周，神经节投射到前鼻孔上皮。因此，终末神经似乎是一种脑神经，与ORS明显不同，因此不应再被认为是终末神经。
Immunohistochemistry revealed a distinct terminal nerve (nT) from the olfactoretinalis system (ORS) in several gymnotid species. The ganglion (NOR) of the ORS is a cluster of FMRF-amide immunoreactive neurones located on the olfactory nerve and bulb. The NOR projects to the olfactory bulb and optic nerve but not to the olfactory epithelium. In contrast, the nT is a small substance P or GnRH immunoreactive fibre bundle which originates from a ganglion located rostral to the olfactory epithelium, courses caudally with the olfactory nerve and terminates as glomeruli in the olfactory bulb. Peripherally the ganglion projects to the epithelium of the anterior nostril. Thus, the terminal nerve appears to be a cranial nerve, clearly distinct from the ORS which consequently should no longer be considered as the terminal nerve.