It is easy to see on the outer surface of a smokerʹs lung hexagons approximately the size of the tip of a little finger and clearly outlined by black lines of carbon. These structures are
A) lobules.
B) bronchopulmonary segments.
C) bronchioles.
D) lobes.

Question

Quizplus · Accepted Answer

Lobules are the smallest subdivisions of the lung visible to the naked eye, and they are outlined by connective tissue, which can become blackened by carbon deposits in smokers.

It Is Easy to See on the Outer Surface of a Smokerʹs