Definition The facial nerve seventh cranial nerveCN VIIlatin: nervus facialis is a mixed cranial nerve consisting of motor, sensory, and visceromotor fibers. The main functions of the facial nerve include controlling the muscles of facial expression, and providing taste sensations from the anterior part of the tongue. Functionally, the facial nerve consists of two parts: somatosensory and visceromotor part.
A year-old woman presented with drooling out of the left side of her mouth and inability to close her left eye. She had no ear pain, hearing loss, or skin rash. The facial palsy affected all branches of the left facial nerve.
Bell's palsy is an unexplained episode of facial muscle weakness or paralysis. It begins suddenly and worsens over 48 hours. This condition results from damage to the facial nerve the 7th cranial nerve.
Facial nervenerve that originates in the area of the brain called the pons and that has three types of nerve fibres: 1 motor fibres to the superficial muscles of the face, neckand scalp and to certain deep muscles, known collectively as the muscles of facial expression; 2 sensory fibres, carrying impulses from the taste sensors in the front two-thirds of the tongue and general sensory impulses from tissues adjacent to the tongue; and 3 parasympathetic fibres part of the autonomic nervous system to the ganglia groups of nerve cells governing the lachrymal tear glands and certain salivary glands. Facial nerve. Info Print Cite. Submit Feedback.
Bell palsy a type of facial nerve palsy is sudden weakness or paralysis of muscles on one side of the face due to malfunction of the 7th cranial nerve facial nerve. This nerve moves the facial muscles, stimulates the salivary and tear glands, enables the front two thirds of the tongue to detect tastes, and controls a muscle involved in hearing. People may feel pain behind the ear, then one side of the face may become weak or completely paralyzed, and they may be unable to taste with the front of the tongue on the affected side.
It emerges from the pons of the brainstemcontrols the muscles of facial expression, and functions in the conveyance of taste sensations from the anterior two-thirds of the tongue. It arises from the brainstem from an area posterior to the cranial nerve VI abducens nerve and anterior to cranial nerve VIII vestibulocochlear nerve. The facial nerve also supplies preganglionic parasympathetic fibers to several head and neck ganglia.
By Juan L. Proprioception is a quality of somatosensibility that informs the central nervous system about the static and dynamics of muscles and joints. In muscles, the proprioceptive originates in the specialized sensory-organ-denominated muscle spindles.
The facial nerve is also known as the seventh cranial nerve CN7. This nerve performs two major functions. It conveys some sensory information from the tongue and the interior of the mouth. Specifically, CN7 serves about two-thirds of the tongue's tip.
Our doctors and therapists have keen understanding of the significant challenges that patients with facial paralysis encounter in daily life and society. Our team works closely together to use their expertise to create an individualized plan for each patient to improve facial function, eye protection, facial appearance, communication, and over-all well-being. Patients with sudden new facial weakness or long-standing, chronic facial paralysis are treated at the clinic.