pharyngeal plexus of vagus nerve pharyngeal plexus of vagus nerve the pharyngeal plexus is a network of nerve fibers innervating most of the palate and pharynx. (the larynx, which is innervated by the superior and recurrent laryngeal nerves from vagus nerve (cn x), is not included.) pharyngeal plexus of vagus nervesmuscles of the pharynx, viewed from behind, together with the associated vessels and nerves. (pharyngeal plexus visible but not labeled.)detailsidentifierslatinplexus pharyngeus nervi vagita98a14.2.01.159ta26338fma6236anatomical terms of neuroanatomy it is located on the surface of the middle pharyngeal constrictor muscle. sources although the terminologia anatomica name of the plexus has "vagus nerve" in the title, other nerves make contributions to the plexus. it has the following sources: cn ix – pharyngeal branches of glossopharyngeal nerve – sensory cn x – pharyngeal branch of vagus nerve – motor superior cervical ganglion sympathetic fibers – vasomotor because the cranial part of accessory nerve (cn xi) leaves the jugular foramen as a part of the cn x, it is sometimes considered part of the plexus as well. innervation sensory the pharyngeal plexus provides sensory innervation of the oropharynx and laryngopharynx from cn ix and cn x. (the nasopharynx above the pharyngotympanic tube and the torus tubarius is innervated by cn v2). motor the pharyngeal plexus, with fibers from cn ix, cn x, and cranial part of cn xi, innervates all the muscles of the pharynx (except stylopharyngeus, which is innervated directly by a branch of cn ix). this includes the following muscles: palatopharyngeus, palatoglossus, musculus uvulae, the pharyngeal constrictors, salpingopharyngeus plus others. note that the intrinsic muscles of the larynx are innervated by the vagus nerve but not by the pharyngeal plexus. instead, they are innervated by the recurrent laryngeal nerve and the external branch of the superior laryngeal nerve, branches of the vagus.