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Doctor insights on: Function Of Dorsal Root Spinal Nerves

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Can you tell me the function of the dorsal root of the spinal nerve?

Can you tell me the function of the dorsal root of the spinal nerve?

Lets you feel things: The nerve root has 2 "ganglions". The dorsal root is on the posterior side of the nerve (closer to your back) and carries the fibers that allow you to feel things in your extremities (for example: pain, temperature, vibration). The information is transmitted to your brain so you understand what type of sensation is being encountered by the extremity. ...Read more

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Nerve (Definition)

The brain and spinal cord communicates with what is occurring in the internal organs and limbs by nerve fibers where are like electrical wires with insulation (myelin) and the "copper" (axon). Within brain and spinal cord these nerves connect to other nerves via synapses on both axons and dendrites. A nerve can carry information regarding sensations, and ...Read more


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What do swellings on the dorsal roots of the spinal nerves signify?

What do swellings on the dorsal roots of the spinal nerves signify?

Nerve cell bodies: The dorsal root ganglion (the enlargement) is the place in the nerve where the cell bodies of feeling nerves (sensory nerves) are located. ...Read more

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What happens if the dorsal root of a spinal nerve is damaged?

What happens if the dorsal root of a spinal nerve is damaged?

It may create: Neuropathic pain as this is in the vicinity of the dorsal root ganglion and may affect that nerve's functional distribution as well depending on what type of overlap or cross innervation that may be in that individual. ...Read more

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What will happen if an injury cuts the dorsal root of a spinal nerve that carries feelings of pain?

What will happen if an injury cuts the dorsal root of a spinal nerve that carries feelings of pain?

Numbness: The dorsal (posterior, toward the back) root carries sensation nerve fibers: feeling of light touch, vibration, sense of position (movement or where the arm or leg or joint is), pain. However, there is much overlap between the area serves by a single nerve, so there may not be total loss of sensation, depending on how the person is "wired.". ...Read more

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What would happen if there was a destruction of the spinal nerve's dorsal root ganglion?

Loss of sensation: Destruction of the dorsal root ganglion would interrupt the sensory pathway of that particular nerve - therefore, one would be expected to have numbness in the distribution of that spinal nerve. ...Read more

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What is dorsal ramus of the spinal nerve?

What is dorsal ramus of the spinal nerve?

A homework question?: You're 34 so I'm guessing it's not a homework question. I just did a web search using your question & got a great profusion of hits. Don't take offense, but HealthTap docs do this to apply medical reasoning to posters' questions, not so they can regurgitate facts that anyone, physician or nonphysician, can look up for themselves. ...Read more

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What are the spinal, cervical and dorsal discs made of?

What are the spinal, cervical and dorsal discs made of?

Cartilage: Cartilage type1 and type 2 cartilage it looks like crab meat and gristle when taling them out surgically. ...Read more

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One of my spinal chords in my lower back is dislocated and is pushing on my nerves, causing me a lot of pain, is a disk surgery recommended?

One of my spinal chords in my lower back is dislocated and is pushing on my nerves, causing me a lot of pain, is a disk surgery recommended?

No: Your vertebrae are likely not dislocated as this is a result of high-energy trauma and requires surgery for reduction and stabilization. You likely have bulging discs, which is normal in 15% of the population of your age. Physical therapy will likely help you and maybe steroid injections if pt doesn't work. Hold off on surgery, it's always the last resort and you're very young. ...Read more

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What specific imaging test takes pics of the nerves coming out of (exiting) the spinal cord? I believe their called spinal nerve roots, not sure.

What specific imaging test takes pics of the nerves coming out of (exiting) the spinal cord? I believe their called spinal nerve roots, not sure.

MRI (best) or CT: An MRI of the spine is the most accurate imaging test to evaluate the spinal cord and the nerve roots exiting the spinal canal. This is most often done without an injection of contrast, however there may be an indication for you to receive an injection of contrast with the MRI. As a Neuroradiologist I often discuss with and advise the referring physician regarding the need for contrast. ...Read more

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My doctor is putting me on glacoma medicine low dose for swollen optic nerves. Is this the right choice? Spinal tap came back fine

Depends: If your opening pressure on CSF tap is normal then using brimonidine can be a rational choice. First need to rule out pseudo-swelling and an ultrasound of the eye to rule out optic disc drusen is in order. Need to see an ophthalmologist for this..usually a retinal specialist ...Read more

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Major concern. I feel a zit shaped bump/lump behind my neck/right below hair/at spinal nerves area!feels hard like could be a bone/lump. It's hard ?

Major concern. I feel a zit shaped bump/lump behind my neck/right below hair/at spinal nerves area!feels hard like could be a bone/lump. It's hard ?

See doctor: The description of bumps in neck area suggests that these may be swollen /enlarged glands called lymph glands .These glands become firm or hard and palpable , mostly due to infection or some other reason . You may get some sore throat and fever .Consult your doctor,get examined and treatment . ...Read more

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What is the inflammation of the root of a spinal nerve?

What is the inflammation of the root of a spinal nerve?

see below: A spinal nerve (root) is a large nerve bundle that leaves the spine at regular intervals, right and left. Inflammation can occur anywhere in the body. Think of a bee sting, with pain, swelling and sensitivity. Inflammation of the nerve root, causes pain close to the spine, and along the route of the nerve. Epidural steroid injections are sometimes used to place anti-inflammatories into the spine. ...Read more

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What's the inflammation of the root of a spinal nerve called?

What's the inflammation of the root of a spinal nerve called?

Radiculitis.: Radiculitis refers to inflammation of the nerve root. A more general term for any problem with spinal nerve roots (including compression) is radiculopathy. ...Read more

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What happens if the ventral root of the spinal nerve is cut?

What happens if the ventral root of the spinal nerve is cut?

Weakness or paralysi: The ventral root contains the motor fibers which control our muscles. Because muscles have multiple nerve roots innervating them the result may only be weakness in a particular group of muscles or could be paralysis if the particular nerve root is the dominant root. ...Read more

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What does it mean to have inflammation of the root of a spinal nerve?

Problem xitng spine: Nerves branch off in bundles from the spinal cord & exit thru an opening between the vertebrae.This is the nerve root. The opening itself is subject to narrowing or irritation from arthritis or various illnesses as are the tissues nearby. Nerve bundles are surrounded bu flexable tissue that can be compressed by the swelling nearby and end up choking off some of the nerve activity. ...Read more

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If ventral root of a spinal nerve were cut what will be the result in the tissure?

If ventral root of a spinal nerve were cut what will be the result in the tissure?

motor loss: The ventral root of the spinal nerve carries the motor fibers, where the dorsal root carries the sensory fibers. So if the ventral root of a nerve was cut, a motor loss would occur; i.e. Either severe weakness or paralysis in the involved muscle. Thank you. ...Read more

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I'm getting surgery on my lower back.One of my spinal discs is trapping a nerve. What should I expect?

I'm getting surgery on my lower back.One of my spinal discs is trapping a nerve. What should I expect?

Hopefully relief: If your leg pain is the main problem and you have failed nonop care and are not a smoker, your success rate should be at least 90%. Postop rehab in terms of guided exercise and back specific education is important to minimize risk of recurrence which is about 5% and further development of back pain in the 10% range. This is assuming you are having a disc surgery without any fusion ...Read more