Facial Nerve

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facial nerve

[′fā·shəl ‚nərv]
(neuroscience)
The seventh cranial nerve in vertebrates; a paired composite nerve, with motor elements supplying muscles of facial expression and with sensory fibers from the taste buds of the anterior two-thirds of the tongue and from other sensory endings in the anterior part of the throat.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Facial Nerve

 

(nervus facialis), the seventh pair of cranial nerves; a mixed nerve containing motor and sensory nerve fibers.

The nuclei of the facial nerve lie in the pons varolii. The conductors connected to these nuclei form the trunk of the facial nerve, which passes through the internal auditory meatus and the pyramid of the temporal bone to emerge from the cranial cavity through the stylomastoid foramen. The nerve divides into its terminal branches in the parotid gland.

The facial nerve’s motor conductors innervate the mimetic musculature, the stylohyoid muscle, the posterior venter of the digastric muscle, and the subcutaneous muscle of the neck. Its autonomic fibers innervate the salivary glands, the lacrimal glands, and the glands of the mucosae of the nasal cavity, palate, and upper pharynx. Its sensory fibers provide the gustatory innervation of the anterior two-thirds of the tongue. The autonomic and sensory fibers of the facial nerve in the vicinity of the brain stem form the nervus intermedius, the largest branch of which is called the chorda tympani. The most frequent pathology of the facial nerve is paralysis.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
(8) They included a mass in the area of the ear (n = 28; 56%), a polyp in the ear canal (n = 27; 54%), aural discharge (n = 20; 40%), aural bleeding (n = 15; 30%), earache (n = 11; 22%), deafness (n = 7; 14%), and cranial nerve VII palsy (n = 7; 14%).
For example, the exit for cranial nerve VII passes anterior to the otic capsule through a space (incisura pro otica) left by the growth upward and backward of the parachordals to form the acrochordal plate contacting the otic capsule.
There is a space between the otic capsule and the ascending process of the palatoquadrate where cranial nerve VII exits the skull posteriorly.