Which force primarily assists in pulling the vocal folds together according to the myo-elastic aerodynamic theory?

The correct answer is based on the principles of the myoelastic-aerodynamic theory of phonation, which explains how the vocal folds come together during sound production. The Bernoulli force plays a crucial role in this process.

As air is pushed through the trachea and into the larynx, the pressure in the airway decreases as the air velocity increases upon passing through the narrow space between the vocal folds. This reduction in pressure is known as the Bernoulli effect. The Bernoulli force acts to pull the vocal folds together after they have been set into vibration by muscular contractions. As the vocal folds are drawn closer together, it enhances their ability to oscillate and produce sound.

This understanding is foundational in voice science, particularly in explaining how vocal folds open and close rhythmically during phonation, contributing to sound production. In summary, the Bernoulli force is the primary mechanism by which the vocal folds are pulled together, allowing for effective phonation according to the myoelastic-aerodynamic model.