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In addition, pain is commonly perceived in the ipsilateral ear. The primary pain is usually continuous or near-continuous, and commonly described as burning or squeezing or likened to pins and needles. Brief paroxysms may be superimposed, but they are not the predominant pain type.
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Return to main tutorial page. The Facial Nerve CN VII transmits encoded taste information away from the anterior two-thirds of the tongue in a branch called the chorda tympani. Since this cranial nerve passes through the middle ear on its way to the brain, it is sometimes damaged along with conditions affecting the ear.
The glossopharyngeal nerve is a paired set of nerves, which is part of the 24 cranial nerves. These nerves are arranged in twelve pairs, of which the glossopharyngeal is the ninth. The pairs of cranial nerves, in order, are: the olfactory, optic, oculomotor, trochlear, trigeminal, abducens, facial, vestibulocochlear, glossopharyngeal, vagus, accessory, and hypoglossal.
The effects of electrical stimulation of the trigeminal, facial and glossopharyngeal nerves on gingival blood flow in the cat were studied. The intracranial part of these nerves was stimulated electrically, and gingival blood flow was measured by the laser Doppler technique. Electrical stimulation of the trigeminal, facial and glossopharyngeal nerves caused blood flow to increase in the ipsilateral gingiva both with the cranial nerve intact and after cutting it to the medulla.
The cranial nerves are 12 pairs of nerves that can be seen on the ventral bottom surface of the brain. Some of these nerves bring information from the sense organs to the brain; other cranial nerves control muscles; other cranial nerves are connected to glands or internal organs such as the heart and lungs. Can't remember the names of the cranial nerves?
Glossopharyngeal neuralgia is characterized by recurrent attacks of severe pain in the 9th and 10th cranial nerve distribution posterior pharynx, tonsils, back of the tongue, middle ear, under the angle of the jaw. Diagnosis is clinical. Treatment is usually with carbamazepine or gabapentin. Glossopharyngeal neuralgia sometimes results from nerve compression by an aberrant, pulsating artery similar to that in trigeminal neuralgia and hemifacial spasm.
Insights into Imaging. The glossopharyngeal nerve GPN is a rarely considered cranial nerve in imaging interpretation, mainly because clinical signs may remain unnoticed, but also due to its complex anatomy and inconspicuousness in conventional cross-sectional imaging. In this pictorial review, we aim to conduct a comprehensive review of the GPN anatomy from its origin in the central nervous system to peripheral target organs.
The glossopharyngeal nerveknown as the ninth cranial nerve CN IXis a mixed nerve that carries afferent sensory and efferent motor information. It exits the brainstem out from the sides of the upper medullajust rostral closer to the nose to the vagus nerve. The motor division of the glossopharyngeal nerve is derived from the basal plate of the embryonic medulla oblongatawhile the sensory division originates from the cranial neural crest. From the anterior portion of the medulla oblongatathe glossopharyngeal nerve passes laterally across or below the flocculusand leaves the skull through the central part of the jugular foramen.