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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).
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What cranial nerve has been damaged when your mouth droops?
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.
What is cranial nerve 7?
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.
What is the role of the facial cranial nerve in controlling facial expressions and movements?
The facial cranial nerve, also known as the seventh cranial nerve or the facial nerve, plays a crucial role in controlling facial expressions and movements. It innervates the muscles of the face, allowing us to smile, frown, blink, and make other facial expressions. Damage to this nerve can lead to facial paralysis or weakness on one side of the face.
What major nerve innervates the extensors of the leg?
The sciatic nerve is the major nerve that innervates the extensor muscles of the leg, particularly the tibialis anterior muscle. It is a large nerve that branches into the common fibular nerve and the tibial nerve, both of which supply various muscles in the leg.
What nerve is not a branch of the trigeminal nerve?
The facial nerve is not a branch of the trigeminal nerve. It is a separate cranial nerve responsible for facial movement and sensation.
What cranial nerve is responsible for muscles of facial expression?
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.
What muscles are mimetic muscles?
They are facial muscles innervated by the facial nerve that, among other things, control facial expression.
Which nerve control smiling?
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.
What cranial nerve has been damaged when your mouth droops?
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.
What cranial nerve serves muscles covering the facial skeleton?
Facial Nerve (VII)
How many nerves to make a smile?
It takes 43 muscles to form a smile, but there are too many nerves involved to provide an exact number. The facial muscles are innervated by the facial nerve (CN VII), which branches out into numerous smaller nerves that control specific movements in the face.
Facial nerve?
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.
How is the nerve supply to platysma muscle?
Facial nerve
What is the nerve supply for taste bud of circumvallate papilla?
It should supply with glossopharyngeal & facial nerve.
What cranial nerve is involved in frowning?
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.
What is cranial nerve 7?
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.
Nerve that passes through the internal acoustic meatus?
The facial nerve (cranial nerve VII) passes through the internal acoustic meatus. It carries motor fibers to the muscles of facial expression and also carries taste sensations from the anterior two-thirds of the tongue.
