The Nervous System
Neurons, Brain, & Spinal Cord:
The SpineThe spinal cord is considered to be an "information highway", which connects the peripheral nervous system to the brain. It is protected by 31 vertebrae. At each segment of bone a pair of spinal nerves branch out. The spinal cord receives information from sensory and motor neurons. Sensory receptors send information along sensory neurons to the spinal cord. From here it is passed via interneurons to motor neurons that lead to muscles in the body. This causes movement. Sensory neurons can also send information through the spinal cord into the brain stem, to then be processed by the thalamus, the sensory switchboard of the brain (except for smell).
Overview of Spinal Cord DisordersThe causes for spinal cord disorders include injuries, infections, a blocked blood supply, and compression by a fractured bone or tumor. The muscles can be become weak or paralyzed and sensation can be abnormal or lost. If possible the conditioned will be corrected by a trained professional. Often, in order to recover as much function as possible, rehabilitation is needed.
Diseases of the Nervous System:
The nervous system is quite possibly the most vital and oddest part of the human body. While other systems may claim that they hold the most vital spot, they are sadly mistaken. Every part of our nervous system, while not every part of this system is "necessary"(you would be surprised at the sheer amount of brain damage someone can live through) all of it is useful. The nervous system as a whole is what makes us the super cool sentient life that we are, and not just a meat sack of automatic functions. Now, that said there is quite a few places where this structure can mess up. Whether it is from birth, or disease, or physical trauma, some pretty weird disorders can come and pop up.
General Information About Nervous System Disorders
- Nervous system disorders can come from abnormalities with one's nervous system, this can be brought on by: trauma, infections, degeneration, structural defects, tumors, blood flow disruption, and auto immune disorders.
- These disorders usually have some of these symptoms: odd persistent headaches, loss of feeling/tingling, weakness, loss of vision, memory loss, impaired mental ability, lack of coordination, muscle rigidity, tremors & seizures, pain, muscle wasting, and slurred speech.
- There are also two kind of nervous system disorders when concerning the brain. Abnormalities that come from odd development of the brain prior to birth is a neurological disorder since it concerns how you are neurologically set up, this includes disorders such as schizophrenia and the autism spectrum. Disorders that are gained from some form of damage during life are mental disorders. This includes things such as depression.
-The disease usually starts with slight tremors in the hand. The effects are gradual and worsen as they go on. As of right now there is no cure, however there does exist medication that lessons symptoms and halts the disease's progress. So that's sort of good.
- The disease does not have a known cause, however there is medication to take for it and it is possible to recover from although it is completely capable of causing permanent damage to your face muscles/ nerves.
- Not to be confused with bell's palsy. Cerebral Palsy is a disorder that comes from experiencing physical head trauma around and during the time of ones birth.
- The disorder has a large amount of possible symptoms such as: disorder of movement, limited motor skills, limited mental capacity/capabilities, fixed abnormalities from limb contractions (limbs stuck at weird angles), epilepsy, visual impairment, squint, reduced hearing, and behavioral problems.
- Deterioration of someones motor system during middle age. It is a disease that is inherited from parents.
- Affects one's spinal cord and specific nuclei in the brain.
- Causes muscle weakness and wasting.
- General seizures: all areas of the brain are involved.
- Symptoms are: opened eyes, odd sounds or crying out, possible lack of breath, loss of urine(through excretion), a loss of consciousness followed by a gradual regaining of it, and confusion following the moment.
- Affects are commonly seen in young and middle aged adults.
- The disorder is brought about through damage to the coating around nerve cells, this impairs the function of the nerve.
- The common symptoms one would experience from this are shaking of the limbs, involuntary eye movement, problems with pronunciation, and spastic weakness.
- This common condition is caused by the damaging or compressing of one's nerves or nerve roots. this form of injury can also happen very suddenly
- what this then causes is a general pain felt in the back and the legs, as well as stiffness for the back, as well as numbness and weakness in legs.
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