What is the excellent larynx nerve?
The excellent larynx (SLN) is part of the vagus nerve located near the larynx in the throat. It is divided into two branches, inner branch and outer branch. The inner superior larynx (ibsln) liberates larynx mucus and the outer superior larynx (EBSLN) controls Cricothyroid and the lower constriction muscles found in the throat. Damage to the superior larynx may cause paralysis of the nerve, change the sound of a person's voice or cause inability to speak. Local therapy can help a person with injury to SLN to regain some normal voice voice functions
Two excellent larynx functions are sensory and motor. The sensory part of the nerve function is related to afferent signals sent from the supraglottic larynx. Motor signals are sent through SLN to ipsilateral cricothyroid muscle located in the throat.
The vocal playground is determined by an excellent larynx nerve. The nerve pulses are transmitted to the muscles of Cricothyroids that cause to withdraw; ContaminationCancer shifts Cricoid lamina, which then moves vocal folds. The spacing of a person's voice varies by voltage and prolonging vocal folds when the contracts of the muscle of Cricothyroids.
serious complication of thyroid surgery is caused by injury to SLN during surgery. It is located near the superior thyroid artery, the nerve is difficult to locate at the beginning of the surgery because it is in a slightly different location for each person. Trauma on EBSLN can cause the voice to sound different or resulted in modulation problems.
Further causes of damage to the superior larynx, which can cause paralysis, change. A tumor located on the skull base can cause the SNN to become compressed and non -functional. Tumors found in the esophagus, known as Sophogeal Oenadors, can exert pressure on salt and endanger its functionality. Trauma dull forces into the throat can cause injury to the salt that can cause paralysisnerve.
The symptoms of paralysis of the salt are related to the voice. The voice of a person can speak after a short period of time and the weak can be hoarse and weak and the ability to increase the volume of voice can be affected by the paralysis of the nerve. Another effect of damage to the SLN occurs when a person sings; Paralysis causes the inability to increase the volume of singing.
Diagnostic tests may be necessary to evaluate the function of excellent larynx nerve. A test called laryngeal electromyographic test is used to measure the action potentials broadcast from the muscles controlled by SLN. The electrodes are placed on the neck, chest and collarbones and during the test a small thin needle is inserted on both sides of the Cricothyroid muscle. No measurable action potential indicates TNERV does not work.