It has a very well-developed muscular tissue and its function is to contract and relax, contract and relax.

该肌肉组织非常发达,用来使心脏收缩,放松,收缩,放松

耶鲁公开课 - 生物医学工程探索课程节选

We're going to come back and talk about the action potential a little bit more when we talk about how the heart works, because the heart when its contracting, the muscle cells also use action potentials to initiate contraction.

我们讲心脏工作原理时,会回头再多讨论一点动作电位,因为心脏收缩时,肌肉细胞也利用动作电位来启动收缩

耶鲁公开课 - 生物医学工程探索课程节选