房室结

房室结 (Atrioventricular node,A-V node)是正常情况下兴奋(神經電訊)由心房传至心室的唯一途径。它位于右心房科赫三角(triangle of Koch)的心内膜深面,其前端发出房室束。其主要功能是将窦房结(Sinoatrial node,S-A node)传来的兴奋发生短暂延搁再传向心室,保证心房收缩后再开始心室收缩。

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