Which nerve doesn't supply the laryngeal muscles?
(C) Hypoglossal nerve# Innervation of Larynx:> Larynx is innervated by branches of the Vagus nerve (CN X) on one side.> Sensory innervation to the glottis and supra-glottis is by the Internal branch of the Superior Laryngeal nerve.> External branch of the superior laryngeal nerve innervates the cricothyroid muscle.> Motor innervation to all other muscles of the larynx & sensory innervation to the subglottis is by Recurrent laryngeal nerve.> Injury to the external laryngeal nerve causes weakened phonation because the vocal cords cannot be tightened.> Injury to one of the recurrent laryngeal nerves produces hoarseness, if both are damaged the voice is completely lost and breathing becomes difficult.> Hypoglossal nerve is 12th cranial nerve, and innervates all the extrinsic and intrinsic muscles of the tongue, except for the palatoglossus which is innervated by the vagus nerve.
External branch of Superior laryngeal nerve
Recurrent laryngeal nerve
Hypoglossal nerve
Internal branch of Superior laryngeal nerve
Neuroanatomy