<prompt> Abductor of vocal cord is ___Posterior cricoarytenoidCricothyroidInterarytenoidLateral cricoaretynoid  <response>: INTRINSIC MUSCLES ACTING ON VOCAL CORDS: Abductors Posterior cricoarytenoid Adductors Lateral cricoarytenoid, lnterarytenoid transverse arytenoid Thyroarytenoid external pa Tensors Cricothyroid Vocalis internal pa of thyroarytenoid INTRINSIC MUSCLES ACTING ON LARYNGEAL INLET: Openers of laryngeal inlet Thyroepiglottic pa of thyroarytenoid Closers of larylngeal inlet Interarytenoid oblique pa, Aryepiglottic posterior oblique pa of interarytenoids 