As seen in the illustration, the folds are located just above the trachea (the windpipe which travels from the lungs). Eatable and potion do not permission through the cords but instead passageway through the esophagus, an unlinked tube. Both tubes are separated by the epiglottis, a "flap" that covers the opening of http://www.mysticjazz.com/voice_lessons.html the trachea while swallowing.
Singers can also learn to job sound in certain ways so that it resonates higher quality within their choral tract
