题目内容
下述儿茶酚胺对心肌的作用,哪一项是的( )
2021-10-17
A.减少自律细胞4期的I,内向离子流
B.增加慢反应细胞0期Ca2+内流
C.通过Ca2+通道磷酸化而加大Ca2+电流
D.增加心肌收缩能力
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