02-05-2009, 05:07 AM
A 5-year-old boy with breathing difficulty chest pain, and cough was admitted to a local hospital. The pediatrician who examined the boy, along with laboratory results, diagnosed the child as having cystic fibrosis. Which of the following structures is most likely blocked?
(A) Trachea
(B) Primary bronchus
© Secondary or lobar bronchi
(D) Terminal bronchioles
(E) Alveolar duct
(A) Trachea
(B) Primary bronchus
© Secondary or lobar bronchi
(D) Terminal bronchioles
(E) Alveolar duct