Lung volume

The lung volume is the amount of air that our lungs can contain. It is divided into several parts. The first is the tidal volume, which is the amount of air we normally inhale and exhale. The second is the reserve volume, which is the amount of air we can inhale or exhale in addition to the tidal volume, if we try. The third is the residual volume, which is the amount of air that always remains in the lungs to keep them open. Together they form the total lung volume. This can vary depending on age, gender, height, and physical condition. A reduction in lung volume may indicate lung diseases such as asthma, bronchitis or emphysema.