颈动脉化学感受器和压力感受器刺激对猫交感神经节前和节后心脏神经及单纤维活动的影响。
Effects of carotid chemoreceptor and baroreceptor stimulation upon the sympathetic preganglionic and postganglionic cardiac nerve and single fiber activity in cats.
作者信息
Szulczyk P, TRZEBSKI A
出版信息
Acta Neurobiol Exp (Wars). 1977;31(1):15-25.
The stimulation of arterial baroreceptors (blind sack technique) inhibited the preganglionic and postganglionic cardiac sympathetic activity. There were found three populations of single sympathetic preganglionic fibers (Th3) responding in a different way to the stimulation of arterial baroreceptors and arterial chemoreceptors (infusion of the small volume of saline bubbled with CO2 into the carotid sinus): (i) inhibited by carotid baroreceptors and excited by carotid chemoreceptors stimulation, (ii) inhibited by carotid baroreceptors and by carotid chemoreceptors stimulation, (iii) some fibers inhibited by baroreceptors did not change activity during stimulation of chemoreceptors. A functional role of each particular group of preganglionic sympathetic fibers is discussed.
动脉压力感受器刺激（盲袋技术）抑制了节前和节后心脏交感神经活动。发现有三类单根交感神经节前纤维（胸段3）对动脉压力感受器和动脉化学感受器刺激（向颈动脉窦内注入少量用二氧化碳鼓泡的生理盐水）有不同反应：（i）受颈动脉压力感受器抑制，受颈动脉化学感受器刺激兴奋；（ii）受颈动脉压力感受器和颈动脉化学感受器刺激均抑制；（iii）一些受压力感受器抑制的纤维在化学感受器刺激时活动无变化。文中讨论了每一类特定节前交感神经纤维的功能作用。
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