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What is a vagus nerve?
What are the sensory functions of the vagus nerve?
Is the vagus nerve a mixed nerve?
What are the components of the vagus nerve?
What organs does the vagus nerve innervate?
What are the different branches of the vagus nerve?
Sep 23, 2023 · The vagus nerve, also known as the tenth cranial nerve (CN X), is one of the most complex and multifunctional nerves in the body. It is primarily a mixed nerve, meaning it contains both motor and sensory fibers, and has a significant role in the autonomic nervous system.
- 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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Oct 30, 2023 · The vagus nerve is a mixed nerve, as it contains both afferent (sensory) and efferent (motor) fibers. This means it is responsible for not only carrying motor signals to the organs it innervates, but it also carries sensory information from these organs back to the central nervous system .
Apr 12, 2019 · An overview of the anatomy of the vagus nerve, including its course, branches (e.g. recurrent laryngeal nerve), function and clinical relevance.
- William Maish
A vagus nerve ‘bypass’ that carries impulses directly between the uterus and brain is thought to allow women with spinal cord injuries to have orgasms. Vagus nerve stimulation affects the gamma-aminobutyric acid neurotransmitter associated with ADHD, leading scientists to propose it as a potential treatment.
Aug 18, 2023 · The vagus nerve, also known as the tenth cranial nerve or cranial nerve X, is a long nerve that originates in the brain stem and extends through the neck and into the chest and abdomen. It is tasked with regulating critical body functions such as heart rate, blood pressure, breathing, and digestion.
Feb 14, 2023 · The vagus nerve is the longest of the 12 cranial nerves. Here, learn about its anatomy, functions, and the kinds of health problems that can occur.
