Facial muscles and nerves

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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. We welcome suggested improvements to any of our articles. You can make it easier for us to review and, hopefully, publish your contribution by keeping a few points in mind.

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The facial muscles or muscles of facial expression are situated within the subcutaneous tissue and are responsible for the movements of skin folds, providing different facial expressions. The facial muscles originate from the bones of the facial skeleton viscerocranium and insert into the skin. The facial muscles are mostly grouped around the natural orifices of the face eyes, nose, mouthtaking part in the closing or widening of these orifices.

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Provides voluntary control of the muscles of facial expression including buccinator, occipitalis and platysma musclesas well as the posterior belly of the digastric, stylohyoid and stapedius muscles. Figure Brainstem section: origin and central course of the branchial motor components of the facial nerve. Fibers leaving the motor nucleus of CN VII initially travel medially and dorsally to loop around the ipsilateral abducens nucleus CN VI producing a slight bulge in the floor of the fourth ventricle - the facial colliculus.

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In this article, we shall look at the anatomical course of the nerve, and the motor, sensory and parasympathetic functions of its terminal branches. The course of the facial nerve is very complex. There are many branches, which transmit a combination of sensory, motor and parasympathetic fibres.

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Facial paralysis is a loss of facial movement due to nerve damage. Your facial muscles may appear to droop or become weak. It can happen on one or both sides of the face.

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The term facial palsy generally refers to weakness of the facial muscles, mainly resulting from temporary or permanent damage to the facial nerve. When a facial nerve is either non-functioning or missing, the muscles in the face do not receive the necessary signals in order to function properly. There are different degrees of facial paralysis: sometimes only the lower half of the face is affected, sometimes one whole side of the face is affected and in some cases both sides of the face are affected.

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The facial nerve is perhaps the most important nerve system when it comes to function. The facial nerve is responsible for all movement of the face. A damaged nerve at the origin in the brainstem leads to paralysis of the entire left or right side of the face. Find out more about the causes, symptoms, and treatments for facial nerve disorders.

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The facial muscles are a group of striated skeletal muscles supplied by the facial nerve cranial nerve VII that, among other things, control facial expression. These muscles are also called mimetic muscles. The facial muscles are just under the skin subcutaneous muscles that control facial expression.

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Locate anatomical landmarks on the surface of the face to understand the pathways of vessels and nerves. Remove the skin of the face leaving the eyelids and lips in place. Identify the muscles of facial expression and the parotid gland.

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