我们曾研究了人类心脏房室传导组织的增龄性变化。鉴于房室结及其束枝主要成分是肌性组织,而窦房结则主要是由起步细胞和维纤组织沟成的纤维肌性组织,两者在结构上明显不同,因此本文试图应用形态学定量方法,重点确定随着增龄,窦房结起步细胞和纤维组织间比例关系的规律性变化;窦房结血管改变对这种变化的影响;并为 We have examined the age-related changes in the atrioventricular tissue in the human heart. In view of the main component of atrioventricular node and bundle branches is muscular tissue, while the sinus node is mainly composed of starting cells and fibrous tissue ditch fur muscle tissue, both significantly different in structure, so this article attempts to use morphology Learn quantitative methods, with emphasis on the determination of aging, sinus node cells and the relationship between the initial ratio of fibrous tissue changes in the regular; changes in the sinus node blood vessels on this change; and