AN ANALYSIS OF THE AXON POPULATIONS IN THE NERVES TO THE PELVIC VISCERA IN THE RAT
AN ANALYSIS OF THE AXON POPULATIONS IN THE NERVES TO THE PELVIC VISCERA IN THE RAT
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DOI：
10.1002/cne.902110102
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发表时间：
1982-01-01
影响因子：
2.5
通讯作者：
COGGESHALL, RE
中科院分区：
文献类型：
--
作者：
HULSEBOSCH, CE;COGGESHALL, RE
选择性手术消融结合EM分析用于确定大鼠腹下神经、骨盆神经和阴部神经中各种类别的轴突数量，这些是该动物中骨盆内脏的神经。无髓纤维在所有这些神经中占主导地位。最重要的发现之一是盆神经含有几乎和腹下神经一样多的节后交感神经纤维。以前的研究者认为盆神经提供副交感神经流入，腹下神经提供交感神经流入盆腔脏器。骨盆神经有相当大的交感神经成分，这一发现否定了这一观点，至少对大鼠来说是这样，并且可能需要重新评估骨盆神经而不是腹下神经切断引起的综合征。其他有趣的发现是，在阴部神经中有无髓传出轴突，表明阴部不是典型的体神经，腹下神经具有非常小的感觉成分，并且在所有这些神经的远端残端中存在纤维存活，特别是骨盆和腹下神经。
Selective surgical ablations combined with EM analyses was used to determine the number of axons in various catagories in rat hypogastric, pelvic and pudendal nerves, these being the nerves to the pelvic viscera in this animal. Unmyelinated fibers predominate in all of these nerves. One of the most significant findings is that the pelvic nerve contains almost as many postganglionic sympathetic fibers as the hypogastric nerve. Previous investigators thought that the pelvic nerve supplied the parasympathetic inflow and the hypogastric nerve the sympathetic inflow to the pelvic viscera. The finding that there is a sizable sympathetic component of the pelvic nerve negates this idea, at least for the rat and presumably calls for a reevaluation of the syndromes that arise from pelivic as opposed to hypogastric nerve section. Other findings of interest are that there are unmyelinated efferent axons in the pudendal nerve, indicating that the pudendal is not a typical somatic nerve, that the hypogastric nerve has a very small sensory component and that there are fibers surviving in the distal stumps of all these nerves, particularly the pelvic and hypogastric nerves.