Which among the following is the abductor of vocal cord?: (A) Posterior cricoarytenoid, (B) Cricothyroid, (C) Interarytenoid, (D) Lateral cricoaretynoid
Answer is A. The posterior cricoarytenoid is the only abductor of the vocal cords. The major abductors of the vocal cords are the lateral cricoarytenoid, thyroarytenoid, and arytenoideus muscles.