Figure 7 - Distribution of the vagus nerve (X) to oral and pharyngeal areas.

Lower motor neurons arising from nucleus ambiguus (NA) that are carried in vagus nerve innervate most of the pharyngeal and laryngeal muscles, via its many branches including the pharyngeal plexus. The afferent fibers are distributed over the laryngeal and pharyngeal areas (Source: Netter medical illustration with permission of Elsevier. All rights reserved.)