What does the hypoglossal nerve innervate?

What does the hypoglossal nerve innervate?

The hypoglossal nerve is mainly a somatic efferent (motor) nerve to innervate the tongue musculature. The nerve also contains some sympathetic postganglionic fibers from the cervical ganglia, which innervates tongue vessels and some small glands in the oral mucosa.

What does Glossopharyngeal nerve innervate?

Special visceral efferent fibers (branchial motor) are the main motor fibers of the glossopharyngeal nerve and supply motor innervation to the stylopharyngeus muscle. This muscle is responsible for elevating the larynx and pharynx, especially during speaking and swallowing.

What muscles are innervated by the hypoglossal?

The hypoglossal nerve innervates all the intrinsic muscles of the tongue. It also innervates three extrinsic muscles: genioglossus, hypoglossus, and styloglossus.

Does the hypoglossal nerve innervate the Geniohyoid?

The C1/C2 roots that travel with the hypoglossal nerve also have a motor function. They branch off to innervate the geniohyoid (elevates the hyoid bone) and thyrohyoid (depresses the hyoid bone) muscles. From the ansa cervicalis, nerves arise to innervate the omohyoid, sternohyoid and sternothyroid muscles.

What nerves affect the tongue?

The hypoglossal nerve enables tongue movement. It controls the hyoglossus, intrinsic, genioglossus and styloglossus muscles. These muscles help you speak, swallow and move substances around in your mouth.

Is Glossopharyngeal neuralgia serious?

MVD provides pain relief in 85% of patients [1]. The major benefit of MVD is that it causes little or no swallowing or voice side effects. However, there is a 5% risk of death due to manipulation of the nearby vagus nerve, which can cause problems with heart rate and blood pressure.

Can the glossopharyngeal nerve be repaired?

The hypoglossal nerve can be inadvertently damaged during dissection around the carotid arteries. Immediate primary repair of the severed nerve can be attempted; however, most patients tolerate a unilateral hypoglossal nerve injury relatively well.

What does tongue nerve damage feel like?

If your lingual nerve sustains an injury, you’ll most likely experience any of these nerve damage symptoms: Changed sensation in the tongue, chin, or lower lip areas (similar to sensations you feel when your oral cavity is numbed for a dental procedure or as the anesthesia slowly wears off) Altered ability to taste.

How do you treat nerve damage in the tongue?

Supportive psychotherapy with steroids, antidepressants, and anticonvulsants may be used to treat lingual nerve injury. Most cases of lingual injuries recover within 3 months without special treatment, but some patients have reported permanent lingual nerve injury [9].

How did I get Glossopharyngeal neuralgia?

Glossopharyngeal neuralgia is generally caused by a small blood vessel that presses on the nerves as they exit the brainstem. This condition is caused by irritation of the ninth cranial nerve by a blood vessel, and is most commonly seen in people over age 40.

Can Glossopharyngeal neuralgia go away on its own?

People often say that the pains feel like electric shocks, and they can be triggered by swallowing, coughing, and sensations in the deep ear. Some patients may experience spontaneous remissions, where the pains go away for weeks, months, or even years. Others require treatment.