SA node

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.

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。

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。

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。

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。