Facial Nerve

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Related to facial nerves: trigeminal neuralgia, trigeminal nerve, Cranial nerves

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.

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.

References in periodicals archive ?
In the beginning the stimulation to the face is given by the machine so that it doesn't sag but the patient has to be very proactive and do the exercises at home till the time the facial nerves work finely," says Dr Renu.
Here she was shocked to hear that she had the symptoms of facial nerve paralysis or Bell's Palsy, in which the ability to control facial muscles on the affected side is temporarily lost.
Probably because of the thickness and resiliency of the facial nerve, we have seen ENoG results showing as much as an 85% decrease in some patients who still had clinically normal facial function.
A working diagnosis of facial nerve neuroma was made, although the patient was informed that acoustic neuroma or other pathology could not be excluded.
6) Since it is generally accepted that the capillary and small-vessel network in sensory ganglia are precursors of capillary hemangioma, the presence of a large meatal ganglion in 12% of temporal bones may be responsible for the development of facial nerve hemangioma within the internal auditory canal.
The most common cause of idiopathic facial paralysis (Bell palsy) is now believed to be the reactivation of a latent neurotrophic virus (herpesvirus family) in the sensory neurons of the facial nerve.
The facial nerve was preserved without transposition in the first patient, the second patient underwent a primary nerve anastomosis, and the third required a cable graft of the facial nerve.
The pre- and postsigmoid dura was skeletonized, and the facial nerve was completely dissected throughout its intratemporal course.
The middle fossa approach to the anterosuperior surface of the petrous pyramid has been used by neurotologists to excise small acoustic neuromas, to denervate the vestibular labyrinth, and to decompress and repair the proximal intratemporal facial nerve.
We report a new case of intracranial NMC that arose from a facial nerve at the cerebellopontine angle in a 44-year-old man.
102-14) showing the relationships among the branches of the pes anserinus was one of the factors in my conceptualizing and performing the anastomosis between the two facial nerves.
Wide-field parotidectomy with resection of the facial nerve and the muscles of facial expression is rarely necessary.