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Study with Quizlet and memorise flashcards containing terms like what are 5 main functions of the vagus nerve?, how are the vagus nerves structured?, why do unilateral lesions of the vagus nerve rarely produce symptoms? and others.
Study with Quizlet and memorise flashcards containing terms like What is the origin of the vagus nerve?, Where does it exit the cranial cavity?, What is the fibre composition? and others.
Study with Quizlet and memorize flashcards containing terms like Which systems does the vagus nerve affect?, What are some specific tasks that the vagus nerve is responsible for?, What cardiac effects are controlled by each branch of the vagus nerve? and more.
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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 .
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.
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May 27, 2020 · Definition. The vagus nerve is a mixed sensory and motor nerve with many functions that include immune response, heart rate, digestion, and mood control. As the longest of the cranial nerves, cranial nerve number ten (CN X) travels from the brain to the abdomen, also innervating parts of the face, throat, and thorax, and acting as a sensory ...
