Which lung is larger in size?

The right lung is larger than the left lung due to anatomical considerations. This difference can be attributed to the presence of the heart, which is located slightly to the left side of the thoracic cavity. To accommodate the heart, the left lung is not only smaller in volume but also has a notch (the cardiac notch) on its surface.

The right lung consists of three lobes—superior, middle, and inferior—while the left lung has only two lobes—superior and inferior. This distinct lobular structure contributes to the overall larger size of the right lung when compared to the left.

Individual variability in lung size can certainly exist, but the general anatomical structure remains consistent across the population with the right lung being larger.