Structure and Function of The Lung Pulmonary Alveoli
Structure and Function of The Lung Pulmonary Alveoli
The Site of Gas Exchange Lung The characteristics of alveoli are suitable for gas exchange: Large quantity (300 million). Large area(90-100 square meters). Thin wall:composed of a layer of cells. Outer surface is entangled with rich capillaries and elastic fibers. Respiratory membrane:The membrane 肺泡 composed of alveolar epithelium and its basement membrane,interstitial tissue and capillary endothelial cells.It is the site for gas exchange between the outside world and blood
The Site of Gas Exchange Lung The characteristics of alveoli are suitable for gas exchange: • Large quantity (300 million). • Large area(90-100 square meters) . • Thin wall: composed of a layer of cells. • Outer surface is entangled with rich capillaries and elastic fibers. Respiratory membrane: The membrane composed of alveolar epithelium and its basement membrane, interstitial tissue and capillary endothelial cells. It is the site for gas exchange between the outside world and blood