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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.
General sensory information from the upper pharynx and posterior one-third of the tongue travel via the pharyngeal branches of CN IX. These peripheral processes have their cell body in either the superior or inferior glossopharyngeal ganglion.
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!
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.
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. This plexus eventually innervates the mucosa lining the upper part of the pharynx.
3 lis 2023 · - Motor: Oculomotor nerve (CN III), trochlear nerve (CN IV), abducens nerve (CN VI), accessory nerve (CN XI), hypoglossal nerve (CN XII). - Mixed (both): trigeminal nerve (CN V), facial nerve (CN VII), glossopharyngeal nerve (CN IX), vagus nerve (CN X).
Pharyngeal branches (rr. pharyngei) provide sensory innervation to the mucous membrane of the pharynx, tonsils, and soft palate. These branches create the anastomosis with the branches of the vagus nerve as well as with the branches of the sympathetic trunk to form the pharyngeal plexus.
