<prompt> Abductor of vocal cord is?Posterior cricoarytenoidCricothyroidInterarytenoidLateral cricoaretynoid  <response>: ANSWER: A Posterior cricoarytenoidREF: Dhingra 4th ed p. 259Repeat from December 2009, December 2010INTRINSIC MUSCLES ACTING ON VOCAL CORDS:AbductorsPosterior cricoarytenoidAdductorsLateral cricoarytenoid, Lnterarytenoid transverse arytenoid Thyroarytenoid external partTensorsCricothyroid Vocalis internal part of thyroarytenoidINTRINSIC MUSCLES ACTING ON LARYNGEAL INLET:Openers of laryngeal inletThyroepiglottic part of thyroarytenoidClosers of larylngeal inletlnterarytenoid oblique part, Aryepiglottic posterior oblique part of interarytenoids 