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

and intertitles to illustrate human anatomy and physiology. Beginning with the organs of respiration, it highlights the structure and function of the nose, larynx, trachea, bronchi, and lungs ...

To better understand the condition, we should begin with a bit of anatomy. When you breathe in ... These are the bronchi. (For fellow science nerds, each one is called a bronchus.) ...