All of these things combined help to improve heart activity, lower blood pressure and cholesterol levels, and reduce bone and muscle loss.

VOA: special.2010.06.08

Now, in the heart action potential is moving from one heart muscle cell to another over the surface of the heart.

心脏中的动作电位,沿相邻心肌细胞在心脏表面传递

耶鲁公开课 - 生物医学工程探索课程节选

It occurs because blood flow gets reduced in that blood vessel and so the heart muscle, which is actively beating all the time, needs large quantities of oxygen provided by blood can't get the blood through the vessel.

发病原因是冠状动脉血流量降低,因为心肌搏动永不停歇,随时需要血液供给大量氧气,发病时血液无法正常流过血管

耶鲁公开课 - 生物医学工程探索课程节选

This causes lower blood pressure, reduced muscle tension and decreased heart rate.

VOA: special.2009.03.24

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