<prompt> Sensory supply of larynx, below the vocal cordSuperior laryngeal nerveInferior laryngeal nerveRecurrent laryngeal nerveInternal laryngeal nerve  <response>: Sensory supply: The internal laryngeal nerve supplies the mucous membrane upto the level of the vocal folds. The recurrent laryngeal nerve supplies it below the level of the vocal folds. Ref: BD Chaurasias HUMAN ANATOMY, Volume 3, 4th edition. 