Pharyngeal plexus

The pharyngeal plexus is a network of nerve fibers supplied by the pharyngeal branch of vagus nerve joining with branches from the pharyngeal branches of glossopharyngeal nerve, sympathetic fibers, and the external laryngeal nerve.

It is located on the surface of the middle pharyngeal constrictor muscle.

Sensory innervation
The pharyngeal plexus provides sensory innervation of the oropharynx and laryngopharynx from CN IX and CN X. (The nasopharynx is innervated by CN V2)

Motor innervation
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 muscles levator veli palatini, palatoglossus, and musculus uvulae, the pharyngeal constrictors, plus others.