Question

Which features distinguish bronchioles from bronchi?

• A. Bronchioles are less than 1 mm in diameter
• B. Bronchioles have cartilage in their walls
• C. Larger bronchioles are supported by connective tissue alone which extend from the interlobular septa
• D. Both A and B
• E. Both A and C

Answer 1

The correct option is E Both A and C

Bronchi are tubes that branch off from the trachea into each lung. Bronchioles are smaller tubes that branch off from each bronchus. There are only two bronchi compared with the hundreds of bronchioles.