That's shown schematically here, let me talk about the bottom diagram first, which shows the process of mitosis.

在此我们图解了这一过程,我先从下面图表里的,有丝分裂过程讲起

耶鲁公开课 - 生物医学工程探索课程节选

Now, if we look at this schematically and so again this is a schematic.

如果我们图解一下,这里又是一个示意图

耶鲁公开课 - 生物医学工程探索课程节选

This process, which is shown schematically here, as a vesicle fusing with the cell membrane and then dropping its neurotransmitter only happens when an action potential reaches the end of the axon.

这一过程 扼要地展示在这里,小泡同细胞膜融合,释放其神经递质,这只发生在动作电位抵达轴突末梢时

耶鲁公开课 - 生物医学工程探索课程节选

It's shown schematically on this diagram here.

这里的这张图大致展示了这种方式

耶鲁公开课 - 生物医学工程探索课程节选