Facial nerve, the seventh cranial nerve. It leaves the brain along with eighths cranial nerve through internal acoustic meatus and comes out through stylomastoid foramen to supply the muscles of facial expression.
The facial muscles are innervated by facial nerve (cranial nerve VII). In contrast, the nearby masticatory muscles are innervated by the mandibular nerve, a branch of thetrigeminal nerve (V).
Cranial nerve 7 is also referred to as the facial nerve. It has both sensory and motor components. Its sensory portion is responsible for taste on the anterior two thirds of the tongue as well as sensation for a small patch of skin by the ear. Its motor component is responsible for innervating the muscles of facial expression.
The facial nerve, also known as cranial nerve VII, controls the muscles of facial expression, including those involved in smiling. It originates in the brainstem and innervates the muscles of the face, allowing for various facial movements, including smiling.
Facial muscles are usually employed to display surprise.
Facial Nerve (VII)
They are facial muscles innervated by the facial nerve that, among other things, control facial expression.
Damage to the facial nerve (cranial nerve VII) can result in drooping of the mouth on one side, a condition known as facial paralysis or Bell's palsy. This nerve controls the muscles of facial expression, including those involved in smiling, frowning, and closing the eyes.
Cranial nerve 7 is also referred to as the facial nerve. It has both sensory and motor components. Its sensory portion is responsible for taste on the anterior two thirds of the tongue as well as sensation for a small patch of skin by the ear. Its motor component is responsible for innervating the muscles of facial expression.
In most of the cases this happens due to a condition called as Bell's palsy. Facial nerve passes on it's way out of the skull through the internal ear. Here it is compressed in most cases. The patient usually has runny nose or else some cold related symptoms. The symptoms usually resolve in three weeks. There can be other causes of facial paralysis, in which case the nerve is pressed.
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The facial nerve, also known as the seventh cranial nerve (CN VII), is an important nerve in the human body responsible for controlling various facial muscles. The facial nerve is essential for facial expression, the sense of taste, and certain functions related to hearing and balance. Here is a detailed overview of the facial nerve, its functions, anatomy, and related conditions: Functions of the facial nerve: Engine function: The main function of the facial nerve is to control facial expression muscles. It stimulates the muscles that allow us to smile, frown, close our eyes, move our lips, and make many other facial movements. Taste sensation: The facial nerve carries taste information from the anterior two-thirds of the tongue, including the taste buds for sweet, salty, sour, and bitter tastes. Salivary glands: The facial nerve also innervates the submandibular and sublingual salivary glands, which are responsible for the production and digestion of saliva. Tear glands and nasal glands: It controls the lacrimal (tear) and nasal glands, contributing to tearing and the production of nasal secretions.
Compression of the fifth cranial nerve can result in facial pain and or numbness. Compression of the seventh cranial nerve can cause spasms, weakness or paralysis of the facial muscles