【正文】
Cartilage plate + + +/ SMC + + + + ++ 第十三頁(yè),共三十一頁(yè)。 Type II alveolar C macrophage Elastic fiber 第二十頁(yè),共三十一頁(yè)。 Alveolar epithelial cell shape cytoplasm functions Type I squamous Phagocytotic vesicle Covered 95% of the surface of alveoli to benefit gas exchange. Type II round cuboidal Osmiophilic multilamellar body Secret surfactant to reduce surface tension and stabilize the alveoli. Type I cell can not regenerate. Type II cell can differentiate into Type I cell . ** 第二十八頁(yè),共三十一頁(yè)。 No SMC**。 Cap. Endothelium.。 第三十頁(yè),共三十一頁(yè)。 Type II alveolar C Osmiophilic Multilamellar bodies 第二十二頁(yè),共三十一頁(yè)。 Respiratory portion- Alveolar duct alveolar sac ?The wall, many alveoli ?SMC** ?Simple cuboidal, squamous Alveolar duct Alveolar sac ?No SMC** 第十五頁(yè),共三十一頁(yè)。 The wall of trachea 1. Mucosa=epithelium+lamina propria ? pseudostratiated ciliated columnar… ?