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心室肌动作电位的典型图形是有一很快的上冲,较长的平台和缓慢的复极化,这对心脏的功能作为一个血泵来说是十分重要的,它的形状可以通过许多因素,如神经——体液调节而发生变化,而且动作电位和心肌收缩有密切的关系,所以不少电生理学工作者对探讨心肌细胞在动作电位过程中的离子运动很感兴趣。近20年来进行了大量的心肌细胞电生理实验和理论研究,目的在于阐明心肌细胞兴奋时详细的离子运动机理。
A typical pattern of ventricular action potentials is a fast up-stroke, long platform and slow repolarization, which is important for heart function as a blood pump and its shape can be determined by many factors, Such as neuro-humoral regulation and change, and the action potential and myocardial contraction are closely related, so many electrophysiological workers to explore myocardial cell during the action potential of the ion movement is very interested. Nearly 20 years have carried out a large number of myocardial electrophysiological experiments and theoretical studies, the purpose is to clarify the excitement of myocardial cells in detail the mechanism of ion movement.