When we measure EKG's, what we're measuring is the activity of all these cells within our heart performing action potentials.
当我们做心电图的时候,我们所测量的是心脏内能发出,动作电位的细胞的活动状态
When an action potential is initiated these ion channels go from their closed state to their open state, when they open sodium can now pass through.
当动作电位形成时,离子通道,从关闭状态转到打开状态,当通道打开时,钠离子就可以通过
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