Glossopharyngeal Nerve

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glossopharyngeal nerve

[¦gläs·ō·fə′rin·jē·əl ‚nərv]
The ninth cranial nerve in vertebrates; a paired mixed nerve that supplies autonomic innervation to the parotid gland and contains sensory fibers from the posterior one-third of the tongue and the anterior pharynx.

Glossopharyngeal Nerve


the ninth pair of cranial nerves. It consists of sensory, motor, and secretory fibers. The nuclei of the nerve are located in the medulla oblongata. The common trunk of the nerve emerges from the cranial cavity through the jugular foramen together with the vagus and accessory nerves and internal jugular vein.

The glossopharyngeal nerve supplies the mucous membrane of the radix linguae, pharynx, soft palate, eustachian tube, and tympanic cavity with sensory fibers. The taste fibers that innervate the posterior third of the tongue enter the peripheral portion of the taste receptors. The motor and secretory fibers innervate some pharyngeal muscles and the parotid gland, respectively. One of the sensory branches of the glossopharyngeal nerve also carries impulses from the carotid sinus, thereby participating in the regulation of blood circulation.

Injury to the glossopharyngeal nerve impairs swallowing and taste. In some cases, compression of the nerve causes neuralgia, manifested chiefly by pain in the regions innervated by it.

References in periodicals archive ?
Destructive surgical interventions for GPN, including intracranial sectioning of the glossopharyngeal nerve, are associated with dysphasia.
Right palsy of the glossopharyngeal nerve (CN IX), vagal nerve (CN X), and hypoglossal nerve (CN XII) led to difficulty swallowing.
Neuralgia: the paroxysmal pain that occurs along the distribution of a peripheral nerve; common forms among MS patients include trigeminal neuralgia and glossopharyngeal neuralgia
Additionally, histopathologic findings in patients with respiratory weakness and WNV infection have demonstrated neuronophagia and leukocytic inflammation of the dorsal motor nuclei of the vagus and glossopharyngeal nerves, which is similar to that seen in the spinal anterior horns (26).
In the setting of head or neck cancer, the physician should have a high index of suspicion, because syncope may arise due to carotid sinus hypersensitivity (secondary to mechanical compression of the carotid sinus) and glossopharyngeal neuralgia (from tumour-induced irritation of the glossopharyngeal nerve), examples of which have been previously reported (8-10).
Certain anticonvulsants are effective in the treatment of trigeminal neuralgia, postherpetic neuralgia, glossopharyngeal neuralgia, and posttraumatic neuralgia.
Inputs to the inspiratory centre from the carotid and aortic bodies via the glossopharyngeal nerves increase as [P.
The cranial nerve involvement included the glossopharyngeal, hypoglossal, and trigeminal nerves.
especially as the tumor had surrounded the vital parts of the neck such as the vagus nerve that acts to lower the heart rate, the phrenic nerve that feeds the diaphragm as well as Glossopharyngeal Nerve in addition to the nerve that controls the movement of the shoulder," said Dr.
Left acoustic (VIII) and facial (VII) cranial nerve palsies occurred initially, followed by trigeminal (V), abducens (VI) glossopharyngeal (XI), vagal (X), accessory (XI), and hypoglossal (XII) left sided cranial nerve palsies.
Griffith, fellowship-trained expert in the field of stereotactic and functional neurosurgery, offers comprehensive evaluation, diagnosis, and treatment of trigeminal neuralgia, supraorbital neuralgia, occipital neuralgia, glossopharyngeal neuralgia, and all facial pain.
The nerve supply to the tonsillar region is via the branches of the glossopharyngeal nerve and branches of the lesser palatine nerves.