Localization of sympathetic center of pulmonary circulation in spinal cord
- VernacularTitle:支配肺血管的脊髓交感神经中枢定位
- Author:
Zhi MING
;
Dixun WANG
- Publication Type:Journal Article
- Keywords:
Pulmonary circulation;
Sympathetic fibers;
Spinal cord
- From:
Chinese Journal of Pathophysiology
1986;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
This study was to localize the position of spinal center of sympathetic nerve which controls the pulmonary circulation in pithed rat model. The sympathetic preganglionic fibers arising from C7-T10 spinal segments were stimulated electrically in succession. During stimulation the pulmonary vascular rcsistance(PVR) was increased in all segments tested, most significantly in C7-T4(about 28% above control value) which was obviously higher than that of Ts-T10. In constract, the systemic vascular resistance(SVR) increased more remarkably when lower segments were stimulated. The higher the stimulated spinal segments, the larger the ratio of APVR/ASVR. The data showed that the spinal center of sympathetic nerve which regulates the vasomotion of pulmonary circulation is located in the segments C7-T4.
