a: Gross anatomy of lung and thorax. b: Microscopic anatomy of bronchial wall. C: View of terminal airway and alveoli. d: Alveolar structure.

Gas exchange is a process that involves the swapping of gases that occurs at exchange surfaces such as the alveoli found within your lungs. Gas exchange allows oxygen to travel into your cells for ...

which is then tethered open by their surrounding alveoli. By performing 3-dimensional reconstructions of lungs from serial sections, he was able to reconstruct airway anatomy and to determine that ...