Normally the sinoatrialnode generates regular electrical pulses that spread across the Chambers of the heart, causing the cells to contract in synchrony.
正常情况下，窦房结产生规律的电脉冲，传入各心房，再带动细胞同步收缩。
2
An artificial pacemaker works by restoring the function of a faulty sinoatrialnode, the heart's natural pacemaker.
人工心率调整器的作用是使紊乱的心脏天然心率调整器窦房结恢复正常功能。
3
Cardiomyocytes in the sinoatrialnode This image shows a section of the sinoatrialnode, a pacemaking area of the right atrium of the heart.