Etiology and Pathophysiology

To fully understand the causation and progression of Cystic Fibrosis, it is helpful to have a visual representation of the disease.  Khan Academy presents a clear and concise visual summary of CF.

https://www.khanacademy.org/science/health-and-medicine/respiratory-system-diseases/cystic-fibrosis/v/what-is-cystic-fibrosis