Which of the following do NOT contain cartilage?
1) tertiary (segmental) bronchi
2) alveolar ducts
3) respiratory bronchioles
4) terminal bronchioles
A) 1, 2, 3, 4
B) 2, 3, 4 only
C) 2, 3 only
D) 2, 4 only

Question

Which of the following do NOT contain cartilage? 
1) tertiary (segmental) bronchi
2) alveolar ducts
3) respiratory bronchioles
4) terminal bronchioles
A) 1, 2, 3, 4
B) 2, 3, 4 only
C) 2, 3 only
D) 2, 4 only

Quizplus · Accepted Answer

Cartilage is found in the larger airways of the respiratory system to provide structure and prevent collapse during inhalation and exhalation. However, it is not present in the smaller airways such as alveolar ducts, respiratory bronchioles, and terminal bronchioles, which rely on other structures for support.

Which of the Following Do NOT Contain Cartilage