问题:
[单选题]某患者,呕吐伴腹泻2天,感虚弱无力。血Na+ 129 mmol/L,K+ 2.5 mmol/L,腱反射减弱。此时引起神经肌肉兴奋性降低的机制是
ANa+内流加快
BCa2+内流减少
C阈电位负值减少
D静息电位负值增大
答案解析:
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