Abstract:

Bronchiolitis has been one of the hot spots in the researches on diseases of respiratory system nowadays. However， the concepts and classifications of this disease remain unclear. In this paper， the denotative and connotative concepts of bronchioles and bronchiolitis were analyzed from the views of anatomy and development biology， and the classification changes of adult bronchiolitis were introduced. These content can be used as references for the systematic studies of pediatric bronchiolitis.

Key words: bronchiolitis, anatomy, category

摘要：

细支气管炎已经成为呼吸系统疾病研究的热点之一。但是，这一组疾病从概念到分类尚有不甚明确之处。该文主要从解剖学和发育学角度剖析了细支气管和细支气管炎的概念内涵和外延，同时对成人细支气管炎分类的变迁进行了对比介绍，以期为儿童细支气管炎的系统研究提供参考。

关键词: 细支气管炎, 解剖学, 分类