Objective To observe the morphological structures of sinoatrial node (SAN) in pig hearts.

目的观测猪心窦房结形态学结构特点。

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。

Conclusion Hyperthyroidism presenting as bradycardia is related to the sinoatrial node function.

结论甲亢可影响窦房结功能使其心动过缓。

When the sinoatrial node starts to malfunction it can cause dangerously slow or erratic rhythms to develop.

窦房结出了问题，心律会变缓或变紊乱，这很危险。

An artificial pacemaker works by restoring the function of a faulty sinoatrial node, 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。