What does the superior laryngeal nerve do?

The superior laryngeal nerve, a branch of the vagus nerve, innervates the cricothyroid muscle of the larynx. This muscle stretches, tenses, and adducts the vocal cord. Superior laryngeal neuralgia usually appears as a postsurgical complication.

What does the external superior laryngeal nerve innervate?

The external laryngeal nerve runs lateral to the larynx deep to the sternothyroid muscle and innervates the cricothyroid and superior pharyngeal muscles.

What nerve Innervates the larynx?

The vagus nerve The vagus nerve is the large nerve that supplies the many branches of nerves that innervate the larynx. The superior laryngeal nerve, its external and internal branches, and the recurrent laryngeal nerve all have very distinct roles in motor and sensory innervation of the larynx.

What does internal laryngeal innervate?

The internal laryngeal nerve is one of the two branches of the superior laryngeal nerve and provides sensory innervation of the laryngeal mucosa down to the level of the vocal cords (supraglottic larynx).

What is superior laryngeal?

The superior laryngeal nerve is a branch of the vagus nerve. It arises from the middle of the inferior ganglion of vagus nerve and in its course receives a branch from the superior cervical ganglion of the sympathetic nervous system. … The superior laryngeal nerve innervates the two cricothyroid muscles.

What symptom is noted when the superior laryngeal nerve is damaged?

Damage to the nerves of the larynx can cause hoarseness, difficulty in swallowing or breathing, or the loss of voice. Treatment depends on the cause and extent of the laryngeal nerve damage. Damage to the laryngeal nerve can result in loss of voice or obstruction to breathing.

What is superior to the larynx?

The larynx is located within the anterior aspect of the neck, anterior to the inferior portion of the pharynx and superior to the trachea.