What does the glossopharyngeal nerve supply?

What does the glossopharyngeal nerve supply?

The glossopharyngeal nerve supplies sensory innervation to the oropharynx, and thus carries the afferent information for the gag reflex. When a foreign object touches the back of the mouth, this stimulates CNIX, beginning the reflex. The efferent nerve in this process is the vagus nerve, CNX.

What is the function of the Glossopharyngeal?

Structure and Function The glossopharyngeal nerve carries sensory, efferent motor, and parasympathetic fibers. Its branches consist of tympanic, tonsillar, stylopharyngeal, carotid sinus nerve, branches to the tongue, lingual branches, and a communicating branch to cranial nerve X (vagus nerve).

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.

How do you treat a glossopharyngeal nerve?

The most effective drugs are antiseizure medicines such as carbamazepine. Antidepressants may help certain people. In severe cases, when pain is difficult to treat, surgery to take pressure off the glossopharyngeal nerve may be needed. This is called microvascular decompression.

What can damage the glossopharyngeal nerve?

Most often the damage is from a blood vessel compressing the nerve. Other causes include aging, multiple sclerosis, and nearby tumors.

What is the main nerve of 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.

How is the glossopharyngeal nerve damaged?

Damage to the nerve can be caused by injury or surgery to the head and neck, as well as by strokes, diseases that affect nerve function, or tumors that grow on or compress the nerve. Common surgical and medical-procedure causes of glossopharyngeal damage include: Tonsillectomy. Sleep apnea surgery.

Which side of brain controls tongue?

There is an area in the frontal lobe of the left hemisphere called Broca’s area. It is next to the region that controls the movement of facial muscles, tongue, jaw and throat.