论文部分内容阅读
向家兔膀胱壁内注入HRP,通过逆行及跨神经节追踪证明:1.膀胱副交感中枢在S_(2～5)髓节(S_(3、4)为中心),主要位于中间带外侧核(占标记细胞总数78.37％),并由此向网状核、后角外侧缘、侧索、中介核及前角后外侧核内扩散。L_(1～5)也有相当数量的长轴突交感节前神经元被标记,说明膀胱壁内有副交感和交感两种节前神经元分布。2.被标记的初级传入神经元中枢突在骶段人背外侧束,主要沿后角外侧缘呈束状行向网状核和中间带外侧核,大部分终止于此,形成膀胱排尿反射的途径;一部分则更向内侧,在中介核到后连合核处形成终末带。另外还有一小束纤维,沿后角内侧缘向腹侧走行,终止于后连合核。这些核团可能是膀胱意识性感觉的中继处。在L_(2～4)也可见沿后角外侧缘走行终止于网状核、中间带外侧核的纤细纤维束。3.一侧膀胱受脊髓双侧支配,但以同侧为主。
The HRP was injected into the bladder wall of rabbits and proved by retrograde and cross-ganglion tracking: 1. The bladder parasympathetic center is located in the S_ (2 ~ 5) medullary node (S_ (3,4)), mainly in the medial lateral ventricle Accounting for 78.37% of the total number of labeled cells), and thus to the reticular nucleus, posterior horn lateral margin, lateral cord, intervening nucleus and anterior horn after the lateral nucleus proliferation. There were also a considerable number of sympathetic preganglionic neurons in L_ (1 ~ 5) were marked, indicating parasympathetic and sympathetic distribution of two preganglionic neurons in the bladder wall. 2. The labeled primary afferent neurons in the dorsolateral sac of the sacral dorsal fascia, mainly along the outer edge of the dorsal horn shaped line to the reticular nucleus and the lateral medulla oblongata, most terminate in this formation of bladder voiding reflex Way; part of the more to the inside, after the formation of nucleus at the intermediate nucleus to form a terminal band. In addition there is a small bundle of fiber, along the dorsal angle to the ventral medial line, terminating in the posterior commissure nucleus. These nuclei may be the relay of the bladder-conscious sensation. In L_ (2 ~ 4) can also be seen along the outer edge of the posterior horn of the line terminating in the reticular nucleus, the middle of the outer nucleus slender fiber bundle. 3. One side of the bladder by the spinal cord dominance, but mainly to the same side.