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| Effects of Vagal and Sympathetic Nerves on Transmembrane Potential of Cardiac Ventricular Cells of Toad | |
| 引用本文： | Jin Jiabu Wang Yunxiang Qin Chaoji Department of Physiology,Fourth Military Medical College,Xi''''an. Effects of Vagal and Sympathetic Nerves on Transmembrane Potential of Cardiac Ventricular Cells of Toad[J]. 中国人民解放军军医大学学报, 1987, 0(3) |
| 作者姓名： | Jin Jiabu Wang Yunxiang Qin Chaoji Department of Physiology Fourth Military Medical College Xi''''an |
| 作者单位： | Jin Jiabu Wang Yunxiang Qin Chaoji Department of Physiology，Fourth Military Medical College，Xi'an |
| 摘 要： | The effects of vagal and sympathetic nerves on the transmembranepotentials of cardiac cells of toad were observed by means of microelectrodetechnique.The vagal nerve was stimulated there would be an increase in restingpotential and acceleration in repolarization of action potential(AP).However,ifatropine was used before stimulation the above-mentioned phenomena woulddisappear.When the sympathetic nerve was stimulated the AP amplitudeincreased,but resting potential(RP)remained the same.The increase of APresulted from the increases of overshoot.When the sympathetic nerve wasstimulated although the heart rate increased and the duration of AP wasshortened,the plateau phase of AP was prolonged.These results suggest that theeffects of vagal and sympathetic nerves on the transmembrane potential of cardiacventricular cells are coordinated and the normal characteritics of transmembranepotential are maintained by both the vagal and sympathetic nerves. |
Effects of Vagal and Sympathetic Nerves on Transmembrane Potential of Cardiac Ventricular Cells of Toad |
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| Jin Jiabu Wang Yunxiang Qin Chaoji. Effects of Vagal and Sympathetic Nerves on Transmembrane Potential of Cardiac Ventricular Cells of Toad[J]. Journal of Medical Colleges of PLA(China), 1987, 0(3) | |
| Authors: | Jin Jiabu Wang Yunxiang Qin Chaoji |
| Affiliation: | Jin Jiabu Wang Yunxiang Qin Chaoji Department of Physiology,Fourth Military Medical College,Xi'an |
| Abstract: | The effects of vagal and sympathetic nerves on the transmembrane potentials of cardiac cells of toad were observed by means of microelectrode technique.The vagal nerve was stimulated there would be an increase in resting potential and acceleration in repolarization of action potential(AP).However,if atropine was used before stimulation the above-mentioned phenomena would disappear.When the sympathetic nerve was stimulated the AP amplitude increased,but resting potential(RP)remained the same.The increase of AP resulted from the increases of overshoot.When the sympathetic nerve was stimulated although the heart rate increased and the duration of AP was shortened,the plateau phase of AP was prolonged.These results suggest that the effects of vagal and sympathetic nerves on the transmembrane potential of cardiac ventricular cells are coordinated and the normal characteritics of transmembrane potential are maintained by both the vagal and sympathetic nerves. |
| Keywords: | vagal nerve sympathetic nerve action potential transmembrane potential microelectrode technique atropine bufo-bufo |
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