sinoatrial bundle

例句：

1. 1. The sinoatrial bundle is responsible for the electrical conduction of the heart's atrial chambers.
   心房束负责心脏的心房室传导。
2. 2. The sinoatrial bundle is an important structure in the heart that regulates the rhythm of theheartbeat.
   心房束是心脏中一个重要结构，它调节心跳的节奏。
3. 3.During atrial fibrillation, the sinoatrial bundle can become disorganized, leading to irregular heartbeats.
   在心房颤动期间，心房束可能会变得混乱，导致不规则的心跳。