Harry suffers from cystic fibrosis and frequently has periods where he can hardly breathe. The problem is most likely the result of
A) inflammation of the bronchi.
B) constriction of the trachea.
C) thick secretions that exceed the ability of the respiratory tract cilia to remove them.
D) laryngeal spasms that occur in response to a toxic substance produced by the epithelial cells.
E) collapse of one or both lungs.

Question

Quizplus · Accepted Answer

Cystic fibrosis is a genetic disorder that affects the production and secretion of mucus, sweat, and digestive fluids. In the respiratory tract, the thick and sticky mucus produced exceeds the ability of the cilia to remove it, leading to blockages in the airways and difficulty breathing. This can eventually lead to inflammation and infection, but the root cause is the thick secretions.

Harry Suffers from Cystic Fibrosis and Frequently Has Periods Where