# total lung capacity meaning

- [Medicine]

The volume of air contained in the lungs at the end of a maximal inspiration. It is the equivalent to each of the following sums: VITAL CAPACITY plus RESIDUAL VOLUME; INSPIRATORY CAPACITY plus FUNCTIONAL RESIDUAL CAPACITY; TIDAL VOLUME plus INSPIRATORY RESERVE VOLUME plus functional residual capacity; or tidal volume plus inspiratory reserve volume plus EXPIRATORY RESERVE VOLUME plus residual volume.

More: Next*total lung capacity*, tlc*Total lung capacity* also increases, largely as a result of increased functional residual capacity.- The values for residual volume and
*total lung capacity* are generally decreased in restrictive lung disease. - One definition requires a
*total lung capacity* which is 80 % or less of the expected value. - More rarely, forced expiratory flow may be given at intervals defined by how much remains of
*total lung capacity*.