Medullary efferent and afferent neurons of the facial nerve of the pit viper Gloydius brevicaudus
Medullary efferent and afferent neurons of the facial nerve of the pit viper Gloydius brevicaudus
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DOI：
10.1002/cne.20081
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发表时间：
2004-05
影响因子：
2.5
通讯作者：
Y. Atobe;M. Nakano;T. Kadota;T. Hisajima;R. Goris;K. Funakoshi
中科院分区：
文献类型：
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作者：
Y. Atobe;M. Nakano;T. Kadota;T. Hisajima;R. Goris;K. Funakoshi
为了比较解剖学的目的，我们用示踪技术和免疫组织化学研究了短尾蝮蛇的面神经，获得了许多新的数据适用于该神经在蛇，特别是蝮蛇的功能。我们能够识别出这些蛇的上级唾液分泌核。来自该核的神经节前纤维沿着腭神经和前交通分支到达翼腭神经节，翼腭神经节附着于三叉上颌神经的深分支。腭神经还包含一般躯体传入和极少数来自腭上某些味蕾的特殊内脏传入。在下颌方向，来自上级唾液神经核的节前纤维加入来自舌下颌神经运动核的特殊内脏传出神经，它们从那里进入鼓索并一起行进一段短距离。特殊的内脏传出分支在颅外分出，节前纤维继续与三叉下颌神经汇合，投射到下颌骨内的小神经节。鼓索也含有来自下颌区的一般躯体传入，但没有特殊的内脏传入。这是第一次在蛇的上级泌涎核及其分支中发现。这些蛇的鼓索也与哺乳动物的鼓索不同，因为它们缺乏任何特殊的内脏传入神经，并且在颅骨外分支。神经学比较杂志472：345-357，2004.© 2004 Wiley利斯公司
For the purposes of comparative anatomy, we used tracer techniques and immunohistochemistry to study the facial nerve in the pit viper Gloydius brevicaudus and obtained much new data applicable to the function of this nerve in snakes and, in particular, pit vipers. We were able to identify the superior salivatory nucleus in these snakes. Preganglionic fibers from this nucleus pass along the palatine nerve and an anterior communicating branch to reach the pterygopalatine ganglion attached to the deep branch of the trigeminal maxillary nerve. The palatine nerve also contains general somatic afferents and a very few special visceral afferents from some taste buds on the palate. In the mandibular direction, preganglionic fibers from the superior salivatory nucleus join special visceral efferents from the motor nucleus in the hyomandibular nerve, from which they pass into the chorda tympani to course together for a short distance. The special visceral efferents branch off outside the cranium, and the preganglionic fibers continue on to join the trigeminal mandibular nerve to project to small ganglia within the mandible. The chorda tympani also contains general somatic afferents from the mandibular region but no special visceral afferents. This is the first time that the superior salivatory nucleus and its adjuncts have been identified in a snake. The chorda tympani of these snakes is also distinguished from the mammalian condition by lacking any special visceral afferents and by branching outside the cranium. J. Comp. Neurol. 472:345–357, 2004. © 2004 Wiley‐Liss, Inc.