The sinoatrial node is located at the junction of the superior vena cava and the right atrium .
窦房结位于上腔静脉与右心房的交界处。
Effects of nicotine on automaticity of sinoatrial node in rabbit heart .
烟碱对兔心窦房结自律性的影响。
Normally the sinoatrial node 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。
In this paper , by using a 2d anatomical model of the intact sinoatrial node ( sa ) node and surrounding atrial muscle of the rabbit heart proposed by zhang et al . , The effect of the distribution of death cells on the pacemaking and conductibility of sa node is investigated by computer simulation .
