Which lung typically has two lobes?

Which lung typically has two lobes?

• A. Right lung
• B. Lung with two lobes
• C. Left lung
• D. Bronchial tree

Answer: (C)

Lung anatomy shows that the left lung typically has two lobes—the upper and lower—divided by the oblique fissure, while the right lung has three lobes (upper, middle, lower) separated by the oblique and horizontal fissures. The left lung has two lobes to make room for the heart, which occupies space on the left side of the chest and creates a cardiac notch. Because the heart takes up space on the left, the left lung is smaller and organized into two lobes, whereas the right lung has more space and can be divided into three lobes. The bronchial tree is simply the airway inside the lungs, not a lung itself, so it doesn’t determine the number of lobes.

Lung anatomy shows that the left lung typically has two lobes—the upper and lower—divided by the oblique fissure, while the right lung has three lobes (upper, middle, lower) separated by the oblique and horizontal fissures. The left lung has two lobes to make room for the heart, which occupies space on the left side of the chest and creates a cardiac notch. Because the heart takes up space on the left, the left lung is smaller and organized into two lobes, whereas the right lung has more space and can be divided into three lobes. The bronchial tree is simply the airway inside the lungs, not a lung itself, so it doesn’t determine the number of lobes.