乙酰胆碱与心肌细胞膜上受体结合后会引起心跳减慢。当兴奋通过神

乙酰胆碱与心肌细胞膜上受体结合后会引起心跳减慢。当兴奋通过神经——心肌突触时,乙酰胆碱会导致心肌细胞膜出现下列哪种变化
A
迅速产生局部电流            

BNa+Ca2+通透性增加
C
对乙酰胆碱通透性增加       

DCl-K+通透性增加

答案

D

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