<prompt> Which of the following laryngeal muscles constitute tensors of vocal cord?Posterior cricothyroid, internal interarytenoidLateral cricothyroid, internal interarytenoidThyroarytenoid, internal interarytenoidCricothyroid and internal thyroarytenoid  <response>: Cricothyroid and internal pa of thyroarytenoid vocalis together constitute tensors of vocal cord. Intrinsic muscles acting on vocal cords: Abductors: Posterior cricoarytenoid Adductors: Lateral cricoarytenoid, Interarytenoid 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 laryngeal inlet: Interarytenoid oblique pa, Aryepiglottic posterior oblique pa of interarytenoids 