Myelin

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  • Myelin Case Study

    Part Two: Diagnosis and Treatment 7. What is myelin and how does it affect the transmission of nerve impulses? Identify the cells responsible for the formation of myelin. Covering some axons is a multilayered lipid and protein called myelin sheath, this helps to insulate the axon and speed up nerve impulses. (Tortora pg. 407) An axon that is surrounded by myelin sheath, whether in the central nervous system (CNS) or the peripheral nervous system (PNS), is said to be “myelinated”, while the bare axon is “unmyelinated”. Action potentials travel more rapidly and further in distance along a myelinated axon, this is because they travel by salutatory conduction. This is when the impulse at the first node generates currents that open gated channels…

    Words: 1830 - Pages: 8
  • Glial Cell Essay

    this process supposedly provides neurons with a fuel that can be broken down faster than glucose. This would explain astrocytes being located on the BBB capillaries. In addition, astrocytes store glycogen which can be broken down to glucose then into lactate. Also, astrocytes surround and isolate synapse thus controlling the release of neurotransmitters. That is, they govern the flow of chemicals necessary for communication between neurons. One can infer that astrocytes that surround the neurons…

    Words: 865 - Pages: 4
  • Charcot Marie-Tooth Disease Research Paper

    that affects the peripheral nerves” (NINDS). They still consider this disease to being rare in the United states. The estimated amount of people who are diagnosed is fewer than 175,00 a year and the worldwide estimate is around 2.5 million. Of course, this number can be much more. National Institute of Neurological Disorders and Stroke has said that “CMT is one of the most common inherited neurological disorders” (NINDS). CMT is also known as Hereditary Motor and Sensory Neuropathy is HMSN for…

    Words: 1923 - Pages: 8
  • Essay On Multiple Sclerosis

    Multiple sclerosis is, by definition a “chronic, typically progressive disease involving damage to the sheaths of nerve cells in the brain and spinal cord, whose symptoms may include numbness, impairment of speech and of muscular coordination, blurred vision, and severe fatigue.” (Oxford Dictionaries, Multiple Sclerosis). We have an understanding of the immune system, whose purpose is to protect the body and fight against diseases. With multiple sclerosis, the immune system does not perform its…

    Words: 1046 - Pages: 4
  • Multiple Sclerosis

    Multiple Sclerosis - Kellie McThenia Multiple Sclerosis involves an immune-mediated process in which an abnormal response of the body 's immune system is directed against the central nervous system. Within the central nervous system or CNS, the myelin sheath (fatty substance that surrounds the nerve fibers) is attacked by the immune system. This forms scar tissue, or sclerosis (scler/o meaning hard, -osis meaning abnormal condition or disease). The damaged or destroyed myelin sheath or nerve…

    Words: 773 - Pages: 4
  • Peripheral Nerve Injury: A Case Study

    Peripheral nerve injury (PNI) can be caused by multiple different traumas, surgical complications and diseases like diabetic neuropathy or Guillain-Barre syndrome. Patients are left with chronic pain and disability of the innervated area. Facial nerve injury is one example of PNI. Facial nerve paralysis results in unilateral facial weakness, loss of function and difficulty to speak (1, 2). Speech, mastication and expression of emotions are based on the ability to move facial musculature, which…

    Words: 340 - Pages: 2
  • Should Women Be Allowed To Fight On The Front Lines Essay

    soldiers do for our country. In order to join the military there are many qualifications that one must meet. Written and physical tests are used to assess recruits. As of right now, men and women have different scores that must be met. If it was changed where men and women have to meet the same requirements, there would be no reason for anyone to believe women could not do what men could. Even right now some men do not meet their requirements and some women score higher than the man…

    Words: 809 - Pages: 4
  • Neuroanatomy Assignment

    information and therefore the conscious perception of light for the dog could be hindered or absent for this reason. This could be the explanation of blindness in the left eye of this dog. The fatty mass was infiltrating into the optic nerves and damage to optic nerves produce monocular visual field defects, another possible cause for the clinical presentation. [3] Oligodendrocytes: Oligodendrocytes are a type of glial cell. Glial cells are one of the most common cells in the central nervous…

    Words: 913 - Pages: 4
  • Spasticity Case Study

    1. Describe what causes “spasticity” in CVA/ABI clients. - Normally spasticity is caused by an imbalance of signals from the central nervous system, which includes the brain and spinal cord, to the muscles. This imbalance is always known to be found in CVA/ABI clients, while dealing with cerebral palsy, traumatic brain injury, stoke, multiple sclerosis, and spinal cord injury. 2. List what things a Specialist in Exercise Therapy should do if a client is having a seizure. - They should first…

    Words: 383 - Pages: 2
  • Krabbe Disease Research Paper

    Krabbe disease Brief description of the disorder: Krabbe disease, a rare genetic degenerative disorder of the central and peripheral nervous systems. It is initiated from a lack of galactocerebrosidase, a vital enzyme for myelin metabolism. This disease is one of a group of genetic disorders called the leukodystrophies, which affects the growth of development of the myelin sheath, the fatty substance that insulates and protects the nerves in the brain and spinal cord. The myelin sheath…

    Words: 446 - Pages: 2
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