![]() Among its many functions, the nerve helps raise part of your throat, enabling swallowing. It provides motor, parasympathetic and sensory information to your mouth and throat. You can protect cranial nerve 12 from some of these conditions by living a healthy lifestyle. Conditions affecting hypoglossal nerve function include stroke, cancer and ALS. It enables you to speak, swallow and push substances around in your mouth. Nursing Times 118: 7.Īuthor: Zubeyde Bayram-Weston is senior lecturer in biomedical science Maria Andrade-Sienz is honorary associate professor in biomedical science John Knight is associate professor in biomedical science all at the College of Human and Health Sciences, Swansea University. The glossopharyngeal nerve is the ninth set of 12 cranial nerves (CN IX). The pharyngeal reflex or gag reflex (also known as a laryngeal spasm) is a reflex contraction of the back of the throat, evoked by touching the roof of your. The hypoglossal nerve helps you move your tongue. It focuses on the anatomy and function of the 12 pairs of cranial nerves.Ĭitation: Bayram-Weston Z et al (2022) Nervous system 5: the peripheral nervous system â cranial nerves. Four of your 12 cranial nerves (which connect areas of your throat and tongue directly to your brain) pass through your medulla. ![]() This article â the fifth in a series about the nervous system â continues to examine the peripheral nervous system, which is made up of nerves that connect the central nervous system to the rest of the body. This is a Self-assessment article and comes with a self-assessment test. Reflexes are involuntary actions produced by the body in response to an external. In fact, the vagus nerve is the longest of any of the 12 cranial nerves. Touching the uvula at the back of the throat can initiate a gag reflex. This article discusses how the cranial nerves work as components of the peripheral nervous system these are special nerves associated with the brain. This long nerve makes up 3/4 of the nerve tissue in your parasympathetic nervous system.
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