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What is the anatomy of the vagus nerve?
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The vagus nerve is the key player in the autonomic nervous system controlling your internal organs. The vagus nerve is a major pathway of the parasympathetic nervous system, which, along with...
Oct 6, 2024 · The vagus nerve runs from the brain through the face and thorax to the abdomen. It is a mixed nerve that contains parasympathetic fibers and has the most extensive distribution of the cranial nerves. Learn more about the vague nerve in this article.
- The Editors of Encyclopaedia Britannica
Apr 29, 2013 · Psychology Definition of VAGUS NERVE: the tenth cranial nerve, a combined nerve with both motor and sensory fibers which serves a multitude of operations. The Dictionary
The vagus nerve, or cranial nerve 10, serves as a main communication channel between your gut and brain. Learn about its function, location, how to stimulate it, and more.
- Cardiovascular
- Gastro-Intestinal
- Other
Many pharmacological agents can be used to potentiate vagal tone on the heart therefore slowing the heart rate. Beta-blockers, muscarinic agonists and cardiac glycosides such as Digoxin are just a few that can be used. Vasovagal syncope can ensue during a period of emotional stress for example causing a sudden drop in blood pressure and heart rate....
Lesions to the CN X are rare. A lesion to the pharyngeal branches can lead to dysphagia (difficulty swallowing) due to the involvement with the muscles of the pharynx. As CN X innervates the Palatopharyngeus and Salpingopharyngeus muscles a lesion here will cause the Palatoglossal arch to drop leading to Uvula deviation away from the affected side....
As stated above a lesion to one of the RLN’s will cause dysphonia. A lesion to both RLN’s will cause aphonia (loss of voice) and a stridor (inspiratory wheeze). Paralysis of the RLN’s usually occur due to cancer of the larynx or thyroid gland or due to surgical complications.
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Nov 7, 2022 · The vagus nerve (cranial nerve [CN] X) is the longest in the body, containing both motor and sensory functions in afferent and efferent regards. The nerve travels widely throughout the body, affecting several organ systems and regions of the body, such as the tongue, pharynx, heart, and gastrointestinal system.
The vagus nerve is a sort of polymath of the parasympathetic nervous system, getting involved in everything from breathing, heart rate, swallowing, sneezing, digestion, appetite, immune responses and even orgasm. The vagus nerve’s wide-ranging skill set comes from having a diverse array of neuron cell types at its disposal.
