What would be the effect of damage to cranial nerve VII?
If there is cranial nerve VII nerve damage, this muscle is paralyzed. Because the branch of the seventh cranial nerve that goes to the stapedius muscle begins very proximally, hyperacusis due to seventh cranial nerve lesions indicates a lesion close to the nerve’s origin in the brainstem rather than more peripheral.
What does the 7th cranial nerve do?
The seventh cranial nerve sends information between the brain and the muscles used in facial expression (such as smiling and frowning), some muscles in the jaw, and the muscles of a small bone in the middle ear.
What would be the effect of damage to cranial nerve VII quizlet?
Damage to this nerve will result in loss of bitter and sour taste and impaired swallowing. When this nerve is damaged, the following occurs, impaired head, neck and shoulder movement (head turns slowly).
Can the 7th cranial nerve repair itself?
Facial nerve damage is not a cosmetic issue; it can result in problems with; speech, eating, and vision. Some of the facial nerve will heal on its own. Months of physical therapy should be done before surgical options.
How do you assess CN VII?
Facial nerve (CN VII) Assess the patient for facial symmetry. Have him wrinkle his forehead, close his eyes, smile, pucker his lips, show his teeth, and puff out his cheeks. Both sides of the face should move the same way. When the patient smiles, observe the nasolabial folds for weakness or flattening.
How do you heal the 7th cranial nerve?
Corticosteroids. Corticosteroid medications reduce swelling in the seventh cranial nerve. Medication is taken by mouth once a day for 10 to 14 days to ensure the nerve recovers. If your symptoms indicate that the herpes zoster virus is causing inflammation, your doctor may recommend a stronger dose of corticosteroids.
What is 7th cranial nerve called?
The facial nerve
The facial nerve is the 7th cranial nerve and carries nerve fibers that control facial movement and expression. The facial nerve also carries nerves that are involved in taste to the anterior 2/3 of the tongue and producing tears (lacrimal gland).
Which of the following is a consequence of damage to the Glossopharyngeal nerve?
Glossopharyngeal nerve lesions produce difficulty swallowing; impairment of taste over the posterior one-third of the tongue and palate; impaired sensation over the posterior one-third of the tongue, palate, and pharynx; an absent gag reflex; and dysfunction of the parotid gland.
Which of the following can result in cranial nerve damage?
The causes of cranial neuropathies include poorly controlled diabetes or high blood pressure, head injuries, infections, strokes, and brain tumors. Common symptoms can include weakness or loss of sensation in part of the face, or changes in vision. Some cranial neuropathies go away on their own.
How long do sensory nerves take to heal?
If your nerve is bruised or traumatized but is not cut, it should recover over 6-12 weeks. A nerve that is cut will grow at 1mm per day, after about a 4 week period of ‘rest’ following your injury. Some people notice continued improvement over many months.
What causes damage to the glossopharyngeal nerve?
Most often the damage is from a blood vessel compressing the nerve. Other causes include aging, multiple sclerosis, and nearby tumors.
What is cranial nerve VII?
Chapter 62Cranial Nerve VII: The Facial Nerve and Taste H. Kenneth Walker. Definition The motor portion, or the facial nerve proper, supplies all the facial musculature. The principal muscles are the frontalis, orbicularis oculi, buccinator, orbicularis oris, platysma, the posterior belly of the digastric, and the stapedius muscle.
Which cranial nerves are affected by minor head trauma?
Trivial head trauma that causes a minor head injury (Glasgow Coma Scale Score 14-15) can result in CN palsies with a similar distribution to moderate or severe head injuries. The CNs associated with the highest incidence of palsy in this study were the olfactory, facial, and oculomotor nerves. The t …
What is an upper motor neuron lesion of cranial nerve VII?
This sort of injury is called an “upper motor neuron” lesion of cranial nerve VII, as it involves the corticbulbar pathway from the motor cortex. The motor or facial nuclei also receive projections the extrapyramidal system and from the frontal lobe, which control emotional expression.
What happens if the seventh cranial nerve is damaged?
If there is cranial nerve VII nerve damage, this muscle is paralyzed. Because the branch of the seventh cranial nerve that goes to the stapedius muscle begins very proximally, hyperacusis due to seventh cranial nerve lesions indicates a lesion close to the nerve’s origin in the brainstem rather than more peripheral.