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Sep 23, 2023 · Neck: In the neck, the vagus nerve descends within the carotid sheath, posterior to the internal and external carotid arteries and alongside the internal jugular vein. Thorax and Abdomen : The nerve continues its downward course through the neck into the thorax, where it contributes to the cardiac, pulmonary, and esophageal plexuses.
- The Pharyngeal Nerve
- Superior Laryngeal Nerve
- Recurrent Laryngeal Nerve
- Superior Cardiac Branches
The pharyngeal branches arise from the inferior ganglion of the vagus nerve and contain visceral afferent fibers and motor fibers. The motor efferent fibers are supplied by the accessory nerve (CN XI) which joins the pharyngeal nerve. The pharyngeal branch of the vagus nerve passes across the internal carotid artery to the middle pharyngeal constri...
It is a structure of IV branchial arch and thus innervates the pharyngeal and laryngeal derivatives of this arch. The afferent fibers of the superior laryngeal nerve arise from the inferior ganglion of the vagus nerve. This branch receives some sympathetic fibers from the superior cervical ganglion. At the level crossing of the hypoglossal nerve (C...
Also known as the inferior laryngeal nerves, there are two recurrent laryngeal nerves, one on the right side of the body and one on the left. They were appropriately given the name recurrent laryngeal nerves as they follow a recurrent course and travel in the opposite direction to the nerve they branched from. The recurrent laryngeal nerve contains...
The superior cardiac nerve branches off the vagus nerve at the upper (superior) and lower (inferior) parts of the neck. Therefore, there are two branches of the superior cardiac nerve on each side. The left superior branch descends lateral to the trachea, in front of the esophagus and deep to the aortic arch and merges with the deep part of the car...
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.
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.
1 day ago · Within the cranium, the auricular branch arises. This supplies sensation to the posterior part of the external auditory canal and external ear. In the Neck. In the neck, the vagus nerve passes into the carotid sheath, travelling inferiorly with the internal jugular vein and common carotid artery.
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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.
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The vagus nerve is the tenth cranial nerve (CN X) and is the longest mixed cranial nerve. Although we refer to the vagus nerve as singular, it's actually a pair of nerves that emerge from the left and right side of the medulla oblongata portion of the brain stem.
