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【超基本!! 跳不停的心臟電流傳導，竇房結、房室結搞不清楚嗎? 快來看】
生命誕生開始於心跳、逝去於心跳停止，每一次的心跳都需要經過心臟電流傳導，人體心臟的電流如何傳導呢?
電流從竇房結 (SA node) 出發，匯流在房室結 (AV node)，經過由希氏束 (Bundle of His) 傳導，分左右兩支後到達終點站心室
電流到達心室後激發動作電位 (action potential) 讓心肌細胞收縮，用力的把血液打出，供給全身，這樣清楚了喔！
心臟節律的傳導系統，從SA node 到AV node, His Bundle, 左右 bundle branch，Purkinje fibers 直到引發心室收縮。
它的規律性，自動性，裡面還蘊藏了很多知識。
當心律傳導系統故障，所帶來的心律不整又是一門更深的學問了。
#心臟傳導系統
#心律不整
The conduction system of heart
《感受心臟的搏動》
心臟跳動是由右心房的竇房結 (SA node) 來控制，經由房室結 (AV node)、希氏束(His Bundle)，把電刺激由心房傳到心室，引起心臟的收縮。
正常的心跳在休息狀態下是規律的，次數介於每分鐘60 至100 次之間，太快、太慢、不規則，都屬於心律不整。
影片來源：https://youtu.be/3IrjBWhdZ6s
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The sinoatrial node, better known as the sinuatrial or SA node is the key structure responsible for the generation of a regular heartbeat and is therefore ... ... <看更多>
sa node 在 竇房結- 維基百科，自由的百科全書 的相關結果
竇房結（英文：Sinus node, sinoatrial node, 或SA node）是心臟里一個組織部位，又稱為節律點。竇房結是正常心跳的產生部位，由其產生的心跳速率約為每分鐘72次。 ... <看更多>