How many lobes does the right lung have compared to the left lung?

The right lung has three lobes while the left lung has two lobes. This distinction is primarily due to the space occupied by the heart, which is positioned slightly to the left within the thoracic cavity. As a result, the left lung is slightly smaller and has only two lobes: the upper and lower lobes. In contrast, the right lung is divided into three lobes: the upper, middle, and lower lobes. This anatomical difference is significant for understanding lung function and structure, especially in the context of medical imaging and respiratory assessments.