Pharyngeal branch of vagus nerve
|Nerve: Pharyngeal branch of vagus nerve|
|Plan of upper portions of glossopharyngeal, vagus, and accessory nerves. (Pharyngeal visible at center right.)|
|Latin||ramus pharyngeus nervi vagi|
|Gray's||subject #205 911|
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The pharyngeal branch of the vagus nerve, the principal motor nerve of the pharynx, arises from the upper part of the ganglion nodosum, and consists principally of filaments from the cranial portion of the accessory nerve.
It passes across the internal carotid artery to the upper border of the Constrictor pharyngis medius, where it divides into numerous filaments, which join with branches from the glossopharyngeal, sympathetic, and external laryngeal to form the pharyngeal plexus.
From the plexus, branches are distributed to the muscles and mucous membrane of the pharynx (except the the stylopharyngeus) and the muscles of the soft palate, except the Tensor veli palatini. A minute filament descends and joins the hypoglossal nerve as it winds around the occipital artery.
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.