q5! - sarim

[ArchivalUser]

A substance is developed that selectively destroys the lamellar bodies of type II pneumocytes. Experimental animal exposed to the substance are most likely to develop?

A-Emphysema
B-Bronchoconstriction
C-Patchy atelectasis
D-Pulmonary hypertension
E-Malignancy

[ArchivalUser]

I think A is the correct answer.

[ArchivalUser]

Why ?

[ArchivalUser]

C-Patchy atelectasis

[ArchivalUser]

C no type 2 pneumocytes lamellar bodies( they r involved in surfacttant secretion) so no surfactant so alveoli collapse

[ArchivalUser]

"C" is correct as explained above . Thanks