如图表示一段离体神经纤维的S点受到刺激而兴奋时,局部电流和神

如图表示一段离体神经纤维的S点受到刺激而兴奋时,局部电流和神经兴奋的传导方向(弯箭头表示膜内、外局部电流的流动方向,直箭头表示兴奋传导方向), 正确的是( )

答案

C

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