Which of the following nerve supplies most of the intrinsic laryngeal muscles?
All intrinsic muscles of larynx are supplied by recurrent laryngeal nerves except cricothyroid which is supplied by external laryngeal nerve a branch of superior laryngeal nerve. Intrinsic muscles of Larynx: ? Muscles that increase or decrease length of vocal cord: ? Cricothyroid ? Posterior cricoarytenoid ? Thyroarytenoid ? Vocalis ? Muscles that adduct/abduct vocal cords: ? Posterior cricoarytenoid ? Lateral cricoarytenoid ? Transverse cricoarytenoid ? Muscles that open/close laryngeal inlet: ? Thyroepiglottic ? Aryepiglottic ? Oblique pa of interarytenoids
Internal laryngeal nerve
External laryngeal nerve
Recurrent laryngeal nerve
Inferior laryngeal nerve