The lobes of a lung are easy to recognize and distinguish from one another because
A) they all have slightly different colors.
B) they are separated by fissures.
C) each is supplied by a primary bronchus, and the primary bronchi are easy to find.
D) carbon from the air accumulates between and outlines the lobes in most people (even if they breathe almost-unpolluted air).

Question

Quizplus · Accepted Answer

The lobes of the lung are separated by fissures, which make them easy to recognize and distinguish from one another. The other choices are not correct – lung lobes do not have different colors, primary bronchi are not always easy to find, and carbon from the air does not accumulate between and outline the lobes in most people.

The Lobes of a Lung Are Easy to Recognize and Distinguish