Myelin

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    Essay On Neuroanatomy

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    The brain, being the most complex organ of the body, controls every action and thought. It is divided into various functional units formed from brain cells that work together to respond to particular stimuli. The brain cells connect with other cells of the body to create communication routes for brain signals. As such, scientists are working to understand the complex organization of the brain with the help of tools that can tag and trace the circuits of the brain as well as finding out how…

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    Spinal Cord Injury

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    pinching the nerves. After you have surgery to move the bones off the nerve the problem is still not solved. The problem then becomes the nerve itself. The nerve has protecting it layers of tissue called the Myelin and when the disks move the Myelin get torn off the nerve fibers. When the myelin is not there and the nerve fiber is exposed this…

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    three day gap); Copaxone (a pill with a lot less side effects, but it was less effective in Sherry Zoccoli’s case); and Meclizine (three pills a day, with huge nausea side effects). These all were taken in the knowledge that they would not cure the myelin damage, or even reverse it, just that it would slow or stop the progression of the disease. Currently Sherry takes a cocktail of drugs each month, which have greatly slowed the effects of MS. This includes Tysabri, an hour and a half long…

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    Almost, 400,000 people in the United States are suffering from this autoimmune disease, in which the body’s immune system starts to destroy the body's myelin and axons, thinking that they are foreign tissue. Essentially, the immune system cannot distinguish between its own tissue and foreign tissue. It is unclear why this disease starts, and if it is due to a muted gene or a virus. Most patients have…

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    that it causes an inflammation of the spinal cord and optic nerve. It is not yet known what causes optic neuritis. However, some experts believe it develops when a person’s immune system accidentally targets the myelin, or the protective substance that covers the optic nerve. The myelin normally aids in the transmission of electrical impulses…

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    Niemann-pick disease is a semi-rare disease.It is made up of a group of diseases passed down through your genes. It contains fatty acids called lipids that collect in the cells of your spleen, liver, and or your brain. Three commonly recognized forms of niemann-pick disease is Types A and B which in most cases are grouped together to make Type1, and then theres Type C which make Type 2. Type A and B is called Acid Sphingomyelinase Deficiency, It is found in special parts within cells called…

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    absorber. Also, the EP diagnosis where it measures the electrical activity of the brain in response to stimulation from specific sensory nerve pathways. The immune system, responsible for most of the MS symptoms The cause of MS is damage to the myelin in the CNS and also damage to the nerve fibers. This interferes with signals between the brain and the spinal cord. Everything that’s happening in your body if you have MS starts with…

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    remains unidentified, which is why MS is regarded by many specialist to be "immune-mediated" instead of "autoimmune." The immune system of an individual targets myelin- the fatty material that encompasses and protects the nerve fibers. The marred myelin creates scar tissue; this is where the disease gets its name. When any part of the myelin or nerve fiber is marred, nerve signals sent…

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    known as the myelin sheath, created by oligodendrocytes. This consists of twenty percent protein and eighty percent lipid. Each oligodendrocyte creates enough myelin to wrap around several axons. The periodic gaps between the neurons are known as nodes of Ranvier, where the nerve signals jump from node to node in a process known as salutatory conduction. Nodes of Ranvier have ion channels, which allow them to exchange ions and generate action potential. The purpose of the myelin sheath is…

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    element known as N-acetyl-aspartate (NAA). When NAA is not broken down properly, it causes a decline of the white substance (myelin) in the brain. Myelin is the fatty layer that acts as padding around the brain nerve fibers and provides nutrition for the nerve cells. When the body stops producing the ASPA enzyme, there is a buildup of NAA that terminates the presence of myelin and damages the brain cells. The indicators of the Canavan Disease typically appear in the first 3 to 9 months of life…

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