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25 paź 2020 · The glossopharyngeal nerve, CN IX, is the ninth paired cranial nerve. In this article, we shall look at the anatomical course of the nerve, and the motor, sensory and parasympathetic functions of its terminal branches.
The branchial motor component of CN IX provides voluntary control of the stylopharyngeus muscle, which elevates the pharynx during swallowing and speech. Origin and central course. The branchial motor component originates from the nucleus ambiguus in the reticular formation of the rostral medulla.
11 kwi 2019 · When examining CN IX, it is important to test the glossopharyngeal nerve. One of the more accessible terminal branches of this nerve is the tonsillar branch, which supplies sensory innervation to the oropharynx.
22 maj 2017 · 2 Function. Branchial motor function (SVE): The muscular branch from the nucleus ambiguus innervates the stylopharyngeal muscle to elevate the pharynx during phases of swallowing and speech. It also innervates the superior pharyngeal constrictor together with muscular branches of CN X.
3 lis 2023 · This article covers the anatomy of the glossopharyngeal nerve (CN IX), focusing on its course, branches and its function. Learn all about it now at Kenhub!
1 kwi 2023 · Glossopharyngeal (CN IX), vagus (CN X), and spinal accessory (CN XI) are intimately related, sharing some nuclei in the medulla and traveling closely together through the basal cistern, skull base, and carotid space.
The pharyngeal branches of the glossopharyngeal nerve are 2 to 3 side branches of the CN IX that mainly carry sensory fibers. Together with branches of the vagus nerve (CN X) and laryngopharyngeal nerve of the cervical sympathetic trunk, these branches participate in forming the pharyngeal nerve plexus on the posterior wall of the pharynx.
