Now, heart tissue is muscular tissue,

心脏组织是一种肌肉组织
it's also electrically active tissue.

也是具有电活性的组织
Each of the cells are capable of undergoing

每一个细胞都具有耐受
an action potential just like action potentials in nerves.

像神经中那样的运动电位的能力
The action potential in a muscle cell is

肌肉细胞中的运动电位
not strictly informational like it is in the nervous system.

不像神经系统中的信息那样严谨
An action potential was the way that an electrical

一个运动电位就是
signal got propagated from one end of the nerve to the other.

从神经的一个末梢传到另一末梢的电信号
In muscle cells electrical signals

如果肌肉细胞中
get propagated from one muscle cell to another,

电信号从一个肌细胞传递到另一个
but another thing happens.

就会发生另一件事
This electrical signal also

这个电信号