最近研究强调细支气管对肺功能的重要性。细支气管的表面与肺泡的表面不同,它不是复盖着一层薄的磷脂膜,而是被纤毛复盖。纤毛又由粘性低的液体所围绕。这种装置可以除去异物微粒子。表面力对细支气管功能是重要的。细支气管的直径是肺容量的函数。当肺部分萎陷时,细支气管起着毛细管的作用易被液体阻塞。在慢性支气管炎,细支气管的阻塞与纤维化和炎症引起的狭窄、分泌的改变以及对管壁牵引的丧失等有关。肺水肿时,液体对细 Recent research has emphasized the importance of bronchioles to lung function. The surface of the bronchioles differs from the surface of the alveoli in that they are not covered with a thin layer of phospholipid but are covered with cilia. Cilia and by the low viscosity liquid around. This device can remove foreign particles. Surface force is important for bronchiolar function. The diameter of the bronchioles is a function of lung capacity. When the lungs collapse, the bronchioles play a role in the capillary easily blocked by the liquid. In chronic bronchitis, bronchial obstruction and fibrosis and inflammation caused by stenosis, changes in secretion and the loss of traction on the wall and so on. Pulmonary edema, the liquid on the fine