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vagus nerve noun[ C ] anatomy specializeduk /ˈveɪ.ɡəs ˌnɜːv/ us /ˈveɪ.ɡəs ˌnɝːv/ either of two nerves that connect the brain to the heart, lungs, and most of the intestines: They focused on the vagus nerve, which sends messages between the digestive system and the brain. There is a difference in function between left and right vagus nerves. When you feel your heart is racing, that information is coming to the brain through the vagus nerve. Pain perceived via the vagus nerve is described as a pressure pain sensation within the chest. Vagus nerve stimulation therapy is used to treat epilepsy by stimulating the brain through the vagus nerve. SMART Vocabulary: related words and phrases The brain & nervous system abducens nerve abducent nerve accessory nerve alexithymia allism glossopharyngeal nerve grey matter hemispheric hemispherical hindbrain neurofibrillary neurogenic neurogenically neuroglia neuroglial reinnervation reticular formation rhinencephalon rhombencephalon right brain
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