Mr. Lunn feels sure that the true vocal cords are not involved in falsetto, that voice being produced by the false vocal cords.
The part of the tube which passes beyond the true vocal cords is bulged to prevent it being coughed out.
The true vocal cords move during talking or singing, and relax or contract when sounding, respectively, a low or high note.
We may safely assume however that it is produced by the true vocal cords and the lightest register in the male voice.
These folds are called the true vocal cords, by the movements of which the voice is produced.