During production of a the vocal folds are?

The best-sounding harmonies often come from a group of individuals simultaneously harmonizing around a single microphone. While that's not physically possible for the solo home-studio harmonist, one...

Our vocal chordes vibrate when we talk. our muscles in our vocal chordes contract and expand to create vibrations, which turn into sound waves, and that turns into frequencies that we can hear, and...

i believe the answer you're looking for is the trachea. correction; It is the Rima glottidis

The glottis.

Your vocal chords do not open or close, they are either vibrating or still. When you breathe they are still, not producing any sound.