Which statement about the lungs is true?

Which statement about the lungs is true?

• A. The left lung has three lobes.
• B. The right lung has two lobes.
• C. The left lung has two lobes.
• D. The lungs have four lobes each.

Answer: (C)

Lungs are divided into lobes by deep fissures, and the number of lobes differs between the two sides. The right lung has three lobes—upper, middle, and lower—separated by a horizontal fissure and an oblique fissure. The left lung has two lobes—upper and lower—separated by a single oblique fissure, and it is slightly smaller because the heart sits on that side, creating a cardiac notch. Therefore, the statement that the left lung has two lobes is true. The other statements are not correct: the left lung does not have three lobes; the right lung does not have only two lobes; and neither lung has four lobes.

Lungs are divided into lobes by deep fissures, and the number of lobes differs between the two sides. The right lung has three lobes—upper, middle, and lower—separated by a horizontal fissure and an oblique fissure. The left lung has two lobes—upper and lower—separated by a single oblique fissure, and it is slightly smaller because the heart sits on that side, creating a cardiac notch. Therefore, the statement that the left lung has two lobes is true. The other statements are not correct: the left lung does not have three lobes; the right lung does not have only two lobes; and neither lung has four lobes.