Which of the following changes does not occur as the conducting tubes of the respiratory tree become smaller?
A) Cartilage disappears in the bronchioles.
B) The lining epithelium thins.
C) Cartilage rings are replaced by irregular plates of cartilage.
D) Elastin in the walls disappears.

Question

Quizplus · Accepted Answer

Elastin does not disappear as the conducting tubes become smaller; it remains present to maintain the elasticity of the airways.

Which of the Following Changes Does Not Occur as the Conducting