What measures the total lung expansion capacity?

Total lung capacity (TLC) is the measure of the maximum amount of air that the lungs can hold after maximum inhalation. It encompasses all volumes of air in the lungs, including tidal volume, inspiratory reserve volume, expiratory reserve volume, and residual volume.

The value of 6000 mL, which is the correct answer here, represents an average TLC for healthy adults. It is important to note that this volume can vary based on factors such as age, sex, body composition, and health status. The other volumes mentioned are indicative of different lung capacities or specific lung volumes, rather than the total lung capacity. By understanding the significance of total lung capacity and its typical measurement, one can better appreciate the functionality and health of the respiratory system in relation to overall lung volumes.