The Nervus Intermedius of Wrisberg: Anatomy and Functions

Often regarded as a root of the facial nerve, the nervus intermedius of Wrisberg (NIW) contains both sensory and parasympathetic fibers. It receives taste information from the anterior two-thirds of the tongue, floor of the mouth, and palate, as well as sensory information from the skin of the external auditory and the mucous membranes of the nasopharynx and nose. It also innervates the sublingual, submandibular, and lacrimal glands. This paper aims to review NIW's origins, path, and functions.