它们没有任何心脏活动。
心脏活动加快和增强可使血流增加。
The blood flow may be increased by more rapid and vigorous heart action.
游泳能增进心脏活动。
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
Some of them have to do with merely digesting food and moving the body around, and making the heart beat,and the lungs open and close.
有一些只负责消化食物或者身体活动,让心脏跳动,让肺部呼吸。
If you put the electrodes in the right position and you measure in the right way you can detect the electrical activity of the heart and record it on a strip recorder like this one shown here, or display it on a computer.
如果将电极放置正确,并采用正确的方式检测,就能检测到心脏的电活动,并将它记录在像这样的长图记录仪上,或者显示在电脑上
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