Myelin Essays

Outline: According to Egans, ALS, or amyotrophic lateral sclerosis, is a disease that affects the nerve cells in the brain and spinal cord, “a progressive disease degeneration of both upper and lower motor neurons.” ALS prevents the nourishment of muscles, and when muscles are not fed the required nutrients, they atrophy. It hit’s areas of the spinal cord where the nerve cells that signal and control the muscles are located. As the area begins to die, it starts to scar or harden in that region.

believed that MS is an autoimmune disease which means that the body’s own tissues are being attacked by its immune system. Autoimmune diseases are often more common in woman than in men. It is thought that in the case of MS the immune system attacks the myelin protecting the nerves within the body. Multiple Sclerosis could be the result of a range of factors. Studies have shown that people living farther from the equator are more likely to develop MS, for example 8,000 people in Ireland have been diagnosed

nervous system. Our central nervous system, the brain and the spine, are responsible for many of our voluntary and involuntary movements. However, in patients with Multiple Sclerosis, the immune system attacks the myelin sheaths that protect the nerves of the CNS. After repeated attacks, the myelin sheath will fall apart, and the immune cells will continue to attack the nerves themselves, which can be irreversibly damaged. Symptoms of Multiple Sclerosis include fatigue, numbness, weakness, vision problems

Multiple sclerosis is an autoimmune disease that causes the demyelination of the myelin sheath which surrounds and protects nerve cells. Multiple sclerosis is a complicated and unpredictable neurological disease, and it can affect any area of the brain and spinal cord (“Multiple Sclerosis: Answers At Your Fingertips.”, 2010). According to Richman, Schub, and Pravikoff (2015) there can be four clinical types of MS, there is relapsing-remitting (RRMS), primary-progressive (PPMS), secondary-progressive

2009). Loss of myelin in the CNS leads to inappropriate action potential activation in which the axons of the neurons become inflamed over time and potentially lead to axon damage and/or loss (Nickerson 2013). Nickerson 2013 also stated that this long term inflammation could be contributing to the long term disabilities associated with MS. Loss of myelin in the axons of neurologic cells lead to many things; one being the formation of astrocytic scarring forming on the myelin sheaths (Newlan et

DEFINITION OF MULTIPLE SCLEROSIS Multiple sclerosis (MS) is a disabling disease on central nervous membrane (CNS). CNS consist of brain, spinal cord and optic nerve. T cells attacks myelin and produce damaging inflammation. Nerve impulses cannot be sent properly (will be explained in section 2) This disease is a lifetime neurological disorder. Diagnosing of MS is complicated because there is no single test can be positively test it. Diagnosing MS includes neurological examination, magnetic

Upon reviewing the given case study following factors identified, that the condition status: progressive Risk factor: age 23 yr. (young age), woman Observation: ptosis, sneering while smiling Reflexes: within normal limits Sensation: Within normal limits Weakness of the bilateral arm increased after exercise Symptoms: Intermittent facial muscular weakness, diplopia in late evening, dysphagia, and bilateral weakness increased

Victor Frankenstein has made a beast, a "despised fiend" (Shelley 90) who torments him all through Mary Shelley's Frankenstein. For sure, the animal confers a few loathsome acts, which drives Frankenstein to seek after him into the Arctic. However the animal does not rouse a similar dread or repugnance in the peruser; rather he earns sensitivity. While Frankenstein may can't help disagreeing, the peruser associates with the creature since he is disengaged from the world and-shockingly has a delicate

“Beware, for I am fearless and therefore powerful.” Fear only holds back those who have things to lose. So what about a man who loses everything at his own hands, what does he fear? It was a million dreams for the world he was going to make. However, Victor Frankenstein becomes the key to the making of a murderer, and his dreams were shattered. Victor suffered from the loss of all his loved ones, which impacted the theme sorrow & loss in the novel. He also loses contact with the social environment

Adie syndrome, also called Holmes-Adie syndrome or Adie 's tonic pupil, is a rare neurological disorder, which affects the autonomic nervous system and the eye’s pupil (the opening in the centre of the eye). In most patients, the pupil of the eye is larger than normal (dilated) and react slowly in response to direct light. Poor or absent tendon reflexes are also linked to this disorder. Causes The exact cause of Adie 's pupil has been unknown. There are many potential causes, including a type of

NAME: Cassianna Sookram ID#: 812003173 DATE: 20.04.2016 CASE REPORT: Retinitis Pigmentosa (Pathology 2) ABSTRACT This case looks at the clinical findings, causes, signs, symptoms, diagnostic tests and management options of a patient with retinitis pigmentosa. Keywords: Retinitis Pigmentosa INTRODUCTION Retinitis pigmentosa (RP) is an inherited, degenerative eye disease that causes severe vision impairment due to the progressive degeneration of the rod photoreceptor cells in the retina. It may

In the classic Disney movie, Snow White and the Seven Dwarfs, Snow White is tricked by the evil queen into being poisoned. Disguised as an old woman, the queen hands Snow White a perfectly ripened, deep red apple. Deceived by its appealing appearance, Snow White takes a bite of the poisonous fruit and the rest is history. Similarly, misleading appearances is what makes up the core conflict in Mary Shelley’s novel Frankenstein. The plot begins with a hopeful scientist, Victor Frankenstein, who embarks

When suffering from peripheral neuropathy, it may feel like a stabbing or burning feeling. Peripheral neuropathy is a result of damage to your peripheral nerves, often causes weakness, numbness, and pain. Sometimes it can affect one nerve which is mononeuropathy, if it affects two or more in different areas then it’s called multiple mononeuropathy or polyneuropathy. Your peripheral nervous system sends information from your brain and spinal cord to the rest of your body. It can be caused by traumatic

Cranial nerve damage Ten pairs of cranial nerves originate in the brain stem continuing to different areas of the face and body. Two pairs of cranial nerves originate in the cerebrum. Cranial nerves travel through specialized holes (foramina) in the skull originated for this purpose. The Abducens nerve offers the precise control needed for specialized movements such as the blink of an eye to a smile resulting from a scant upturning of a lip made possible by the Facial nerve. Damage to any of

Depending on how much of the myelin sheath is destroyed and how much blockage there is in regards to the conduction of nerve impulses all depends, and directly impacts the severity of the clinical manifestations (McDonald, Smith, 1999). Demyelination causes problems with swallowing, speech, muscle strength, gait and coordination, balance, numbness and bladder dysfunction. The further the myelin sheath begins to break down the more blockage there will be which

Tim Ferguson, Australian comedian, author, and star of the nineties comedy group the Doug Anthony All Stars, publically revealed in 2012 that he suffers from Multiple Sclerosis (MS) (Franks, 2014). He first noticed symptoms when he was around 18 years old but chose to ignore them as a temporary product of his lifestyle (Gearin, 2012). After several episodes of paralysis and numbness, also known as paresthesias (Baquis & Shenoy, 2014), on his left side (Ferguson, 2013) he was diagnosed with MS in

"You can sway a thousand men by appealing to their prejudices quicker than you can convince one man by logic" (Robert A. Heinlein). With that, Daniel Coyle, attempted to convince readers using the rhetorical devices that talent comes with the work you put in. Personally I don’t think Daniel Coyle did a good job persuading readers to buy the Talent Code. He draws the readers in by using real life examples, repeats himself many times through out the book, and he didn't use just one topic of interest

blurred vision, loss of vision, blind spots and so on. However, the original cause was thought to be exercise. This was not totally wrong, because the cause of Uhthoff’s discovery was suspected to be due to heat production by neurons. A neuron without a myelin sheath must utilize more energy to conduct a nerve impulse compared to a myelinated neuron. This energy output generates and releases energy in the form of heat that may have secondary effects on the body. As it turns out, more than half of individuals

White matter contains axons, which are extensions of neurons. A covering called myelin surrounds many axons, and myelin gives white matter its white color. The formation of myelin occurs from childhood through adulthood and it greatly speeds up nerve impulses among neurons. Myelination makes a difference so great that unmyelinated axons send signals 100 times slower than myelinated ones. Another crucial function of myelin is that it quickens the way brain processes information. It does this by helping

The Teenage Brain in Connection to Romeo and Juliet If girls are from Venus and boy are from Mars, teenagers must be from a galaxy far far away. The way teenagers behave can be attributed to them being from a different planet because of their impulsive and many times emotional decisions coming forth as rash and uncalculated. The Shakespearean characters Romeo and Juliet exhibit these characteristics in the way they behave. Throughout the play, Romeo and Juliet make the same choices as any ordinary