<prompt> Which of the following muscle is not supplied by Recurrent Laryngeal nerve: PGI Dec 2008Posterior cricoarytenoidThyroarytenoidLateral cricoarytenoidCricothyroid  <response>: Ans: D Cricothyroid Nerve Supply of LarynxMotorAll the muscle which move the vocal cords Abductor0- posterior cricoarytenoid; adductorQ-Lateral cricoarytenoid, Interarytenoid thyroarytenoid: tensorQ-Cricothyroid, vocalis are supplied by Recurrent Laryngeal nerve1except the cricothyroid muscle. The latter receive its innervation from External Laryngeal nerveQ - a branch of superior Laryngeal nerveSensoryAbove vocal cords - Internal Laryngeal nerve, a branch of Superior Laryngeal nerve3Below vocal cords - Recurrent Laryngeal nerveQRT Recurrent Lary ngeal Nerve - It arise from the vagusQ at level of subclavian artery, hooks around it then ascends bw the trachea oesophagus.LT Recurrent Laryngeal Nerve - It arises from the vagusQ in the mediastinum at the level of arch of aorta, loops around it then ascends into the neck in the tracheo-oesophageal groove. Thus, LTRLN has a much longer courseQ which makes it more prone to paralysis as compared to the right one. 