Which muscle is recognized as the primary tensor of the vocal folds?

The cricothyroid muscle is recognized as the primary tensor of the vocal folds due to its anatomical structure and function. This muscle plays a crucial role in modulating pitch during phonation by tensing the vocal cords. When the cricothyroid muscle contracts, it pulls the thyroid cartilage forward and downward while tilting it relative to the cricoid cartilage. This action elongates and tightens the vocal folds, which consequently raises the pitch of the voice.

Understanding the mechanics of vocal fold tension is essential for grasping how different muscles contribute to voice production. The cricothyroid muscle's unique placement and function make it distinctly suited for adjusting tension, as compared to the other muscles listed.