Which lung has three lobes and is responsible for 55% of gas exchange?

The right lung is composed of three lobes: the upper, middle, and lower lobes. This anatomical structure allows it to occupy a larger volume compared to the left lung, which has only two lobes. The greater size and surface area of the right lung contribute significantly to its ability to participate in gas exchange.

The lungs work together to facilitate respiration, but the right lung typically handles more air volume and gas exchange due to its larger size. This results in it being responsible for approximately 55% of the total gas exchange in the lungs. Understanding lung anatomy and function is critical, especially when considering respiratory physiology and pathophysiology, as it helps in recognizing how respiratory conditions may affect gas exchange efficiency in each lung.