Aug 23, 2023
The glossopharyngeal nerve, often known as CN IX, is the ninth cranial nerve. These nerves begin at the brain's base. They are attached to different parts of the mouth and throat, muscles, and organs. Each side has one of these nerves.
Glossopharyngeal nerve termination occurs deep within your neck, near the base of your throat. In addition to its many other use, it helps in swallowing. This nerve is one of the select handful in your body to contain three different types of fibres.
Parasympathetic nerves aid tissues and organs in relaxing when they are not in use.
It allows you to taste, touch, and sense temperature. Sensory: Gives you the ability to feel things.
The medulla oblongata is where the glossopharyngeal nerve originates. It leaves the skull through the jugular foramen, where the tympanic nerve splits off to provide parasympathetic innervation to the parotid gland.
The superior and inferior ganglia, which contain the cell bodies of the sensory fibres, are located after the jugular foramen. The nerve then descends the neck, innervating the stylopharyngeus and providing sensation to the carotid sinus and body.
It divides into its other branches, the lingual, pharyngeal, and tonsillar, and ends in the pharynx between the superior and middle pharyngeal constrictors.
The glossopharyngeal nerve has the following branches:
The functions of the glossopharyngeal nerve are numerous. Near your throat, the glossopharyngeal nerve has an impact on the following muscles, organs, and bodily functions:
Your brainstem's lowest region, the medulla oblongata, is where the glossopharyngeal nerve originates. Before entering your throat, it travels via a number of neck structures.
Its route comprises:
Numerous factors can influence CN IX, some of which may have an effect on quality of life. They comprise:
Some of the factors that contribute to CN IX illness may not be preventable. Glossopharyngeal neuralgia is one condition that can develop for unknown reasons.
It's crucial to get a skilled surgeon if you require surgery to address a problem close to the CN IX. The best option is a doctor who does a lot of the operations you require.
There are some illnesses that can be avoided, like malignancies of the throat and mouth. The following steps can help you lower your risk:
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