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心脏主要由心肌组织和从心肌分化出来的特殊传导组织所构成。这些组织的主要生理特性有兴奋性、自律性、传导性和收缩性,其兴奋性、自律性和传导性都以生物电为基础,亦称为电生理特性。
The heart is composed mainly of myocardial tissue and specialized conductive tissue that differentiates from the myocardium. The main physiological characteristics of these tissues are excitability, self-discipline, conductivity and contractility, and their excitability, self-regulation and conductivity are all based on bioelectricity, also known as electrophysiological properties.