猫高位颈髓呼吸神经元群传入联系  

Afferent projections of upper cervical respiratory neuron group of cats

作　　者：宋刚[1] 姜萍 李勤[1] 

机构地区：[1]山东大学医学院生理研究所 [2]山东莱阳中心医院内科

出　　处：《山东医科大学学报》2002年第1期15-16,I001,共3页Acta Academiae Medicinae Shandong

基　　金：山东省卫生厅科研基金资助课题(99CAICAA12)

摘　　要：目的：探讨高位颈髓呼吸神经元群传入联系。方法：将ＷＧＡＨＲＰ（５％，１０　ｎｌ）注入颈髓Ｃ２节段中间内侧区呼吸神经元所在区域，观察逆行标记神经元的分布。结果：在孤束核背内侧核、孤束核腹外侧核（背侧呼吸组）、脑桥ＫＦ核、蓝斑核、疑核（腹侧呼吸组）等结构观察到较多数量的逆行标记神经元。在中缝核观察到少数逆行标记神经元。另外在脊髓Ｃ５节段腹侧角膈神经核区域观察到顺行标记末梢纤维。结论：高位颈髓呼吸神经元群接受发自脑桥及延髓呼吸相关结构的纤维投射。Objective:To investigate the afferent projections of the upper cervical respiratory neuron group of cats.Methods: Observe the distribution of retrogradely labeled neurons after the injection of WGA HRP into the intermediate zone of cervical spinal cord of C2 segment.Results:Retrogradely labeled neurons we re observed in the dorsomedial nucleus of solitary tract, ventrolateral nucleus of solitary tract, pontine Kolliker-Fuse nucleus, nucleus of locus coeruleus, and the nucleus ambiguus. A few labeled neurons were also observed in the raphe nucleus. A few anterogradely labeled terminal fibers were observed in the ventr al horn of C5 segment.Conclusion:The upper cervical respiratory ne ur on group receives afferent projections from pontine and medullary respiratory re lated structures.

关 键 词：呼吸神经元 麦角辣根过氧化物酶 逆行标记 猫 高位颈髓呼吸神经元群 

分 类 号：R338.2[医药卫生—人体生理学]