THE LOCATION AND MORPHOLOGY OF PREGANGLIONIC NEURONS AND THE DISTRIBUTION OF VISCERAL AFFERENTS FROM THE RAT PELVIC NERVE - A HORSERADISH-PEROXIDASE STUDY
THE LOCATION AND MORPHOLOGY OF PREGANGLIONIC NEURONS AND THE DISTRIBUTION OF VISCERAL AFFERENTS FROM THE RAT PELVIC NERVE - A HORSERADISH-PEROXIDASE STUDY
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DOI：
10.1002/cne.902260207
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发表时间：
1984-01-01
影响因子：
2.5
通讯作者：
BOOTH, AM
中科院分区：
文献类型：
--
作者：
NADELHAFT, I;BOOTH, AM
骶副交感神经核（SPN）的节前神经元几乎全部（98%）位于L[腰]6-S[骶]1脊髓节段内。SPN包含. apprx。550个中等大小的神经元（10 × 10）。20 μ m）。这些树突主要位于中间外侧灰质，并延伸到背外侧索，沿着背角的外侧边缘区和内侧进入背侧灰质连合。标记的背根神经节细胞几乎全部（95%）位于L 6和S1神经节。平均. apprx。发现了1500个感觉神经元，这些是小细胞（17 × 104）。25 μ m），其中央突起进入Lissauer束，从Lissauer束出现2组侧支：沿背角的外侧缘沿着突出的外侧通路，其延伸到SPN的区域中并且还延伸到背侧灰质连合中，以及围绕背角的背侧缘延伸以终止于背侧灰质连合中的不太突出的内侧通路。这2个侧支组形成间隔为apx的纤维束。当在水平面中观察时，中心之间的距离为100 μ m。第三传入束，由喙尾方向的纤维，位于矢状面直接腹侧的中央管。在大鼠中的结果和在猫和猴子中进行的类似实验之间进行了比较。
Preganglionic neurons of the sacral parasympathetic nucleus (SPN) were located almost exclusively (98%) within the L[lumbar]6-S[sacral]1 spinal cord segments. The SPN contained .apprx. 550 neurons of medium size (10 .times. 20 .mu.m). These were mainly located in the intermediolateral gray matter and had dendrites that extended into the dorsolateral funiculus, along the lateral marginal zone of the dorsal horn and medially into the dorsal gray commissure. Labeled dorsal root ganglion cells were almost all located (95%) in the L6 and S1 ganglia. An average of .apprx. 1500 sensory neurons were found. These were small cells (17 .times. 25 .mu.m) whose central processes entered Lissauer''s tract from which 2 groups of collaterals emerged: a prominent lateral pathway along the lateral margin of the dorsal horn that extended into the region of the SPN and also into the dorsal gray commissure, and a less prominent medial pathway extending around the dorsal margin of the dorsal horn to terminate in the dorsal gray commissure. These 2 collateral groups formed fiber bundles that were spaced by .apprx. 100 .mu.m between centers when observed in the horizontal plane. A 3rd afferent bundle, composed of rostrocaudally oriented fibers, was located in the sagittal plane immediately ventral to the central canal. Comparisons are made between the results in rats and of similar experiments performed in cats and monkeys.