摘要
电刺激麻醉家兔膈神经中枢端可引起动脉血压下降，此降压反应不能被剪断双侧迷走神经所阻断；但可被静脉注射心得安１．０ｍｇ／ｋｇ部分阻断；也可被静脉注射酚妥拉明２．０ｍｇ／ｋｇ部分阻断，去除缓冲神经后其降压效应更为明显．结果表明：膈神经的传入纤维参与血压调节，其降压反应与迷走神经无关，而与α受体和β受体功能有关．
The electrostimulation of the central ends of phrenic nerves elicited the depressor re-sponse in 24 anesthetized rabbits.The depressor response couldn't be inhibited by bilateral vago-tomy,but it would partly be inhibited by intravenous injection of phentolamine(2mg/kg) or by in-travenous injection of propranolol(lmg/k.By sinoaortic denervation,the depressor response be-came more obvious.These results indicate that phrenic afferents play a role in the regulation ofthe cardiovascular activities.The mechanism of depressor response probably relates to a receptorand β receptor,but this response has no relation to vagus.
出处
《蚌埠医学院学报》
CAS
1995年第1期3-5,共3页
Journal of Bengbu Medical College
基金
本院青年教师基金资助课题
关键词
膈神经
动脉血压
缓冲神经
迷走神经
酚妥拉明
phrenic nerves
arterial blood pressure
propranolol
buffer nerve
phentolamine
