Which cranial nerve has both sensory and motor functions select all that apply one some or all responses may be correct?
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What are cranial nerves?The 12 cranial nerves extend from your brain and brain stem, responsible for helping you control different motor and sensory functions. Twelve cranial nerves extend from your brain and brain stem, responsible for helping you control different motor and sensory functions. Cranial nerves facilitate communication between the brain and other parts of the body, mainly to the head and neck region. Cranial nerves come in pairs on both sides of the brain and brain stem. Each one is numbered based on the place in the brain where they emerge, from front to back. When these nerves end up damaged and start malfunctioning because of an illness or injury, it affects your body’s ability to move and feel. Cranial nerve disorders are also called cranial neuropathies. The 12 cranial nerves and their functions are:
Signs and symptoms of cranial nerve disordersCranial nerve issues can show up in people of any age. The symptoms you might experience depends on each cranial nerve’s function. Some of the most common signs that can indicate a cranial nerve disorder include:
Types of cranial nerve disordersSome examples of common disorders that are related to your cranial nerves include: Trigeminal neuralgiaThis condition results from a malfunctioning of the trigeminal cranial nerve. You experience severe facial pain, typically due to an artery's abnormal positioning that puts pressure on the nerve. It can feel like short bursts of stabbing pain in the lower part of your face. Bell palsyYou typically experience paralysis or weakness on one side of their face when the facial cranial nerve stops functioning correctly. Bell palsy, or Bell’s palsy, can be brought on by an immune disorder or a viral infection. You may lose the ability to taste things with the front of your tongue on the side of your face that is affected. Internuclear ophthalmoplegiaDamage to the lower part of the brain stem can lead to issues with your horizontal eye movement, sometimes leading to double vision. This cranial nerve disorder usually occurs when there is an injury to the fibers connecting the oculomotor nerve, the trochlear nerve, and the abducens nerve. Internuclear ophthalmoplegia often occurs in people who’ve had a stroke or in younger people with multiple sclerosis. QUESTIONThe abbreviated term ADHD denotes the condition commonly known as: See AnswerCauses of cranial nerve disordersVarious conditions can lead to problems in how cranial nerves function, including:
Tests for cranial nerve disordersThe kind of test requested by your doctor will depend on your symptoms. Tests typically performed to diagnose neuropathy include:
Treatments for cranial nerve disordersSome cranial nerve disorders can clear up on their own. Other recommendations from your medical provider might include medication for treating the symptoms of your neuropathy. They may also recommend surgical intervention to repair damage. Cranial nerve disorders can cause extensive damage so it is important to get tested and get treatment. Medically Reviewed on 1/4/2021 References Johns Hopkins Medicine: "Multiple Cranial Neuropathies." Merck Manual: "Bell Palsy." Merck Manual: "Internuclear Ophthalmoplegia." Merck Manual: "Overview of the Cranial Nerves." Merck Manual: "Trigeminal Neuralgia." Penn Medicine: "Cranial Nerve Disorders: Conditions and Diagnosis." UC Davis LibreTexts: "Brief Overview of Cranial Nerves." What types of nerves have both sensory and motor nerves?Spinal nerves: You have 31 pairs of spinal nerves branching out from your spinal cord. These nerves can provide sensory function, motor function or both. For example, spinal nerves may carry sensations from your joints and muscles to your spinal cord.
Do all cranial nerves contain both sensory and motor fibers?Cranial Nerves
Most of the nerves have both sensory and motor components. Three of the nerves are associated with the special senses of smell, vision, hearing, and equilibrium and have only sensory fibers. Five other nerves are primarily motor in function but do have some sensory fibers for proprioception.
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