Which of the following would be found in the wall of a tertiary bronchus?
A) C rings of cartilage
B) cartilage plates only
C) a mix of cartilage plates and smooth muscle
D) smooth muscle only
E) none of the above

Question

Quizplus · Accepted Answer

Tertiary bronchi are smaller than primary and secondary bronchi, and they have fewer cartilage rings. Instead, the wall of the tertiary bronchus contains a mix of cartilage plates and smooth muscle. The smooth muscle allows for greater control over airflow and bronchoconstriction/bronchodilation.

Which of the Following Would Be Found in the Wall