Myelin

The first main system is the central nervous system which consists of the brain and the spinal cord. There are three main sections of the brain; the forebrain which contains the cerebrum and the parts of the diencephalon (the thalamus, hypothalamus, and epithalamus most importantly), the midbrain which is a part of the brain stem, and the hindbrain which consists of the medulla oblongata, the pons, and the cerebellum. The cerebrum, the picture on the right hemisphere of the model’s brain, is the…

Guillain Barre Syndrome Guillain Barre Syndrome (GBS) is an autoimmune disease affects the peripheral nervous system. The defining symptom of this syndrome is the body is attacking itself. GBS does affect both males and female of any age but most common seem to be between the ages 30 to 50 years old. A variety of symptoms can occur depending on the severity of the disease. Since this is a very aggressive disease, early and quick diagnosing is essential to the recovery of the patient. Physicians…

myelinated, the salutatory conduction takes place in it which accounts for the rapid conduction velocity of the facial never, which is 70 to 110./sec. When injury to the neuron results in demyelination and faulty remyelination of the nerve fiber, the myelin covering is thinner and the distance between the nodes of ranvier are are altered, leading to marked slowing in the conduction velocity as well as to an increase in the threshold for…

begins. Next, an impulse in sent towards the brain telling it what happened. The impulse travels through axons, which connect cell bodies to muscles, neurons, or glands. This process occurs over and over, and is sped up by the use of the myelin sheath. The myelin sheath speeds up the movement of neural impulses in an axon by covering it in a layer of fatty tissue. This is necessary due to the fact that some axons can range up to several feet long through the body. The Reticular Formation If a…

MS and her determination to not let MS define her, So what is MS? MS, is also known as multiple sclerosis. It is the degeneration of the myelin sheet; it’s a disabling disease of the central nervous system that interrupts the passage way of information inside the brain, and between the brain and body. MS relapses are caused by inflammation in damages the myelin coating around nerve fibers What causes Ms? There is no known cause but there are some theories and I will focus on four of them. The…

Multiple sclerosis is a neurological disease, and a chronic condition, which means it progressively gets worse overtime. There is a substance called myelin that wraps around your nerves to protect them, but MS breaks down that substance, and your body attacks itself. The unprotected nerves can't function as they would with normal healthy myelin. The damaged nerves produce many symptoms. Some symptoms include; trouble walking, feeling tired, muscle weakness, blurred vision, numbness and tingling…

I am going to talk to you about why older drivers should have restrictions. Australia is an ageing population and as you can see from this graph people are living longer, this means that there are lots of older drivers on our roads. A study in Queensland found that the accidents caused by older drivers could be due to a range of age-related declines like deterioration in sensory, cognitive and motor abilities, medical and neurological conditions. As you can see on this graph, due to this decline…

Adrenoleukodystrophy also known as ALD is a genetic disease. This is a brain disorder where the myelin in the brain gets destroyed and one will have an unusual amount of saturated fatty acids. When the myelin gets destroyed the neurons in the brain start to stop telling the central nervous system what to do. At first a person will show behavior changes but as the disease progresses the symptoms become worse; causing people to become blind, deaf, experience weight loss, have seizures, and even…

Introduction If you or a loved one have been recently diagnosed, or have been living with Multiple Sclerosis, you are now all set to learn the most up to date information about how to manage, alleviate and possibly even reverse your symptoms. Before we get started, let 's consider what Multiple Sclerosis is, what types there are, and what symptoms you may expect. What is Multiple Sclerosis? Jean-Martin Charcot, French neurologist, was the first to describe Multiple Sclerosis (MS) back in 1868…

Fyodor Dostoyevsky created the novel, Notes From Underground, holding insightful thoughts on the purpose and meaning of life. Within the novel, Dostoyevsky creates the character, the Underground Man. He laments human’s inconsistencies and their inability to grasp the meaninglessness of existence; while they work tirelessly to exert control over their uncontrollable environments. Human desire for power is epitomized in their attempts to rebel against the physiological laws of nature that govern…