CENTRAL ORIGINS OF CRANIAL NERVE PARASYMPATHETIC NEURONS IN THE RAT
CENTRAL ORIGINS OF CRANIAL NERVE PARASYMPATHETIC NEURONS IN THE RAT
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DOI：
10.1002/cne.901900211
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发表时间：
1980-01-01
影响因子：
2.5
通讯作者：
NORGREN, R
中科院分区：
文献类型：
--
作者：
CONTRERAS, RJ;GOMEZ, MM;NORGREN, R
利用辣根过氧化物酶（HRP）追踪方法确定了大鼠脑神经VII、IX和X的神经节前副交感轴突中枢神经元的位置。这些神经元形成一个不间断的背柱，延伸到整个髓质的长度。该柱的头端向腹侧转动，神经元分散在孤立束核（NST）吻极和面部运动核之间的细胞网状结构中。HRP晶体在经典背运动核中切割的颈迷走神经标签神经元中的应用。从表面上看，这种分布沿着NST的内侧边缘继续，仅在尾侧结束于IX舌扁桃体分支的神经元。在NST的吻侧极及其腹侧，出现了服务于舌扁桃体和鼓室分支的神经元，以及鼓室索和大浅岩（GSP）分支的神经元。鼓室索和鼓室神经的中枢神经元从NST向腹侧扩散，在面肌运动核上升辐射侧的网状结构中稀疏分布，但在很大程度上是共分布的。紧靠这个分布的腹侧，密集的GSP传出神经元出现在面运动核的前外侧。背传出柱的神经元和从背传出柱延伸到网状结构的神经元虽然在数量和堆积密度上有很大的不同，但它们具有相似的形态特征。躯体体是中型的，梭状的，或多极的，但通常不超过5或6个主要的过程。
The location of central neurons that contribute preganglionic parasympathetic axons to cranial nerves VII, IX and X in rats has been identified using horseradish peroxidase (HRP) tracing methods. These neurons form an uninterrupted dorsal column that extends over the entire length of the medulla. The cephalic end of this column turns ventrally with neurons scattered in the parvicellular reticular formation between the rostral pole of the nucleus of the solitary tract (NST) and the facial motor nucleus. Applying HRP crystals to the cut cervical vagus labels neurons in the classically defined dorsal motor nucleus. Rostrally, this distribution continues along the medial edge of NST, ending just caudal to neurons exiting in the lingual-tonsilar branch of IX. At the rostral pole of the NST and ventral to it, neurons occur that serve the lingual-tonsilar and tympanic branches of IX, as well as the chorda tympani and greater superficial petrosal (GSP) branches of VII. Central neurons of the chorda tympani and tympanic nerves spread ventrally from NST into a sparse but largely coextensive distribution in the reticular formation lateral to the ascending radiations of the facial motor nucleus. Immediately ventral to this distribution, a dense accumulation of GSP efferent neurons appears rostrolateral to the facial motor nucleus. Although they vary considerably in number and packing density, the neurons of the dorsal efferent column and those extending from it into the reticular formation have similar morphological characateristics. The somata are medium-sized, fusiform, or multipolar, but with usually no more than 5 or 6 major processes.