What nerve Innervates the larynx?

The vagus nerve is the 10th cranial nerve and is responsible for supplying the entire larynx with its complex innervation through the different nerves and respective branches discussed in this article.

What is laryngeal innervation?

Innervation. The larynx receives both motor and sensory innervation via branches of the vagus nerve: Recurrent laryngeal nerve – provides sensory innervation to the infraglottis, and motor innervation to all the internal muscles of larynx (except the cricothyroid).

What does recurrent laryngeal nerve innervate?

Both recurrent laryngeal nerves ascend cranially, ventral to the common carotid artery, to innervate all intrinsic muscles of the larynx except for the cricothyroid muscles, which are innervated by the ipsilateral external branch of the cranial laryngeal nerve.

Which structures are innervated by the recurrent laryngeal nerve?

branches and supply

• motor supply to all the intrinsic muscles of the larynx except the cricothyroid muscle, which is supplied by the external laryngeal nerve.
• sensory and secretomotor supply to the laryngeal mucosal structures below the level of the vocal cords and trachea.

What happens if internal laryngeal nerve damage?

Laryngeal nerve damage is injury to one or both of the nerves that are attached to the voice box. Laryngeal nerve damage can be caused by injury, tumors, surgery, or infection. Damage to the nerves of the larynx can cause hoarseness, difficulty in swallowing or breathing, or the loss of voice.

Is vocal cord and larynx same?

The vocal folds, also known as vocal cords, are located within the larynx (also colloquially known as the voice box) at the top of the trachea. They are open during inhalation and come together to close during swallowing and phonation.

How do you fix laryngeal nerve damage?

Treatment depends on the cause of the injury. In some cases, no treatment may be needed and the nerve may recover on its own. Voice therapy is useful in some cases. If surgery is needed, the goal is to change the position of the paralyzed vocal cord to improve the voice.

How long does it take for laryngeal nerve to heal?

RLN injury usually presents postoperatively with voice changes and/or hoarseness. Symptomatic incidence varies between 2.3% and 24.2%, and most patients recover within 1 year.

What is the main function of larynx?

The larynx serves to protect the lower airways, facilitates respiration, and plays a key role in phonation. In humans the protective and respiratory functions are compromised in favor of its phonatory function.

What is larynx and its function?

The larynx, commonly called the voice box or glottis, is the passageway for air between the pharynx above and the trachea below. The larynx plays an essential role in human speech. During sound production, the vocal cords close together and vibrate as air expelled from the lungs passes between them.