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Gaokao Biology Practice Question

4.在神经调节过程中，兴奋会在神经纤维上传导和神经元之间传递。下列有关叙述错误的 是（）

  1. A.兴奋从神经元的细胞体传导至突触前膜，会引起Na+外流
  2. B.突触前神经元兴奋可引起突触前膜释放乙酰胆碱
  3. C.乙酰胆碱是一种神经递质，在突触间隙中经扩散到达突触后膜
  4. D.乙酰胆碱与突触后膜受体结合，引起突触后膜电位变化

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