What is the alveolus function?
In addition to functions including carbon dioxide gas exhaust of and oxygen intake, another lung function is to ensure that the bronchi maintain an open air pathway. Lungs are rich in flexible fibers that can shrink and swell leaving no persisting resistant impression – similar to a spring; in this way bronchial obstruction is prevented after exhaling. Emphysema for instance, causes destruction of this fiber and is connected to difficulty in exhaling.