vocalis

noun
vo·​ca·​lis | \ vō-ˈkā-ləs How to pronounce vocalis (audio) \

Medical Definition of vocalis

: a small muscle that is the medial part of the thyroarytenoid, originates in the lamina of the thyroid cartilage, inserts in the vocal process of the arytenoid cartilage, and modulates the tension of the true vocal cords