Objective: To study the effect of Astragali injection on the excitement and fatigue of the center, nerve (nerve-muscle junction) and muscle of mice and observe the changes of enzymology.

目的：研究黄芪注射液对小鼠中枢、神经(神经—肌接头)和肌兴奋性及疲劳性的影响，并观察酶学的改变。

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Acting on neuromuscular junction, muscle relaxant can block excitation conduction from nerve to muscle, thus relaxing the muscle.

肌松药作用于神经肌肉接头，阻断神经至肌肉的兴奋传递。

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Methods: By recording the action potential of sciatic trunk and contract curve of sural muscle of hoptoad, and checking the time of fatigue in nerve center, neuro-muscular junction and muscle.

方法：记录蟾蜍坐骨神经干动作电位和腓肠肌收缩曲线，测定低位运动中枢、神经-肌接头和骨骼肌出现疲劳的时间并加以比较。

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