This group of COPD images and videos shows us not only what healthy lungs should look like, but how COPD hinders lung function.
COPD, or chronic obstructive pulmonary disease is a blanket term used to describe both chronic bronchitis and emphysema. Often caused by cigarette smoking, these diseases can on occasion occur due to external environmental factors.
In order to see how COPD impairs lung function, it helps to understand how the lungs function and what they look like when they're healthy. Take a tour of the human respiratory system in this image gallery.