Vocal Cords Research Paper

The vocal folds, which are commonly known as the vocal cords, are located inside the larynx and control the air amount that flows from the lungs during phonation. They are composed of two folds of mucous membrane and stretch horizontally across the larynx.
The vocal folds open during respiration to allow air out of the lungs. They close when speaking, so air exiting the lungs is then pressed between them to cause vibrations and create sound.