COPING WITH AN Irregular heartbeat
Jun 11, 2020
1 minute
![womweelivseruk200701_article_066_01_01](https://article-imgs.scribdassets.com/48oy7hf9kw7xmakk/images/fileLNQ48YQM.jpg)
The right and left atria are the two smaller heart chambers, and receive blood from the lungs and body. Their muscular walls contract in response to electrical instructions from the heart’s natural pacemaker, squirting blood into the ventricles,
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