Sensory nerve supply of larynx below the level of vocal cord is:: (A) External branch of superior laryngeal nerve, (B) Internal branch of superior laryngeal nerve, (C) Recurrent laryngeal nerve, (D) Inferior pharyngeal
Answer is C. Nerve supply of larynx

Sensory:

––The internal laryngeal nerve supplies the mucous membrane up to the level of the vocal folds.
––The recurrent laryngeal nerve supplies below the level of the vocal folds.

Motor:

––All intrinsic muscles of the larynx are supplied by the recurrent laryngeal nerve except for the cricothyroid
which is supplied by the external laryngeal nerve.