SA node

This is particularly important when the conducting tissues between the SA node and the ventricles fail only from time to time .

尤其在窦房结和心房之间的传导组织有时发生故障时这点尤为重要。

The electrical signal is generated through an influx of calcium into the cells in the SA node , causing a change in voltage which creates the current .

这个电信号是通过窦房结细胞的钙离子的内流产生的，它导致了膜电位的变化而由此产生了电流。

From the SA node , electrical impulses spread through the heart muscle to trigger the heartbeat .

从窦房石结出来的电脉冲传播到心脏肌肉触发心脏跳动。

The levels of noradrenaline ( NA ) and acetylcholinesterase ( AChE ) in the SA node region were determined with biochemical methods .

同时应用组织化学法结合图像分析、生化测定观测了窦房结区去甲肾上腺素（NA）及乙酰胆碱酯酶（AChE）的变化。

Methods Two Hodgkin-Huxley equations are used to simulate the potential of SA node and AV node , and to describe the regular pattern of cardiac rhythm .

方法利用两个Hodgkin-Huxley方程分别模拟窦房结和房室结的电位，综合描述心脏节律的规律。

AIM : To study the electrophysiological effects of diacetyl guan-fu base A ( DGFA ) on pacemaker cells in sinoatrial ( SA ) node .

目的：研究关附乙酯（DGFA）对窦房结起搏细胞电生理学的影响。

There is this specially adapted system of muscle and nerve tissue in the heart the sinoatrial ( SA ) node , the atrioventricular node , and the Purkinje fibers which sets the rhythm of the heart .

心脏中一般有肌肉调节系统和神经组织窦房结，房室结，和浦肯雅纤维这些控制着心率。