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.

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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。

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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。

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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。

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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。

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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。

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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。

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