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Nervous system quizlet
Nervous system quizlet
Chapter12 central nervous system
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Our bodies spend countless amounts of energy fighting off and defending ourselves from harmful diseases. Diseases come in many shapes and sizes, vastly affecting the systems of our body. One of the most important systems i our body is the nervous system. The nervous system is composed of a complex network of neurons which enables our bodies to incorporate information from the outside world, integrate, and perceive that information. In addition, the nervous system allows us to act through motor control. Fundamentally, the nervous system is vital to our understanding and ability to interact with the world. One important disease that detrimentally affects the nervous system is multiple sclerosis (MS). This debilitating demyelinating disease attacks the human body’s main method of transmitting and communicating information, by inflammation of the Central Nervous System (CNS) of the brain and spinal cord. Normally, the neurons within the CNS are insulated by a substance known as myelin that helps the propagation of action potentials. These myelin sheaths are attacked by the body’s own immune system. This results in a degeneration of the essential bodily functions such as walking, breathing, and even thinking. We believe that the nervous system is one of the most important systems within our bodies. It not only controls our sensory, motor and autonomic responses to the environment, but also is arguably the system that makes us human. We were fascinated by the fact that a simple change in the myelination of cells could cause such a profound effect on th body as a whole. In addition, we have also had personal experiences with individuals who unfortunately have been diagnosed with MS. MS is a unique disease based on its etiology, causes an... ... middle of paper ... ...acerbations of symptoms. Current research is focusing in on mesenchymal stem cells’ ability for differentiation that could potentially be used for immunomodulato effects (Hoogduijn, 2010). However, there are many controversies associated with stem cell research. Furthermore, researchers are exploring possibilities of gene therapy by looking at “susceptibility genes,” or genes in an individual tha increase the risk of having MS. In this way, these susceptible genes can be further studied and used as targets for therapy. (NINDS, 2013; Mowry, 2013). One of the ways in advancing our knowledge and understanding of MS is through continuous research built off on current knowledge of the disease. Many are hopeful that more information about MS will be researched so that one day, even when one is diagnosed with MS, the consequences will not be devastating or life threatening.
However, I am not going to spend a long time describing the nitty-gritty of this because there is an elephant in the room. Both of these writings are on a terrible chronic disease affecting millions of people worldwide. What’s worse is that millions and millions more do not even know that this disease exists. I remember when I sprained my ankle while playing baseball, it was so bad that I needed crutches for two weeks and had to keep my foot wrapped for multiple weeks after. The incident took me out for the rest of the season, where my little league team got very close to going into the postseason but fell short. Due to my absence, I felt partly responsible for my team’s loss. I cannot begin to fathom the effect that MS would have in my life
Multiple sclerosis (MS) is a disease affecting the myelination of the central nervous system, leading to numerous issues regarding muscle strength, coordination, balance, sensation, vision, and even some cognitive defects. Unfortunately, the etiology of MS is not known, however, it is generally thought of and accepted as being an autoimmune disorder inside of the central nervous system (Rietberg, et al. 2004). According to a study (Noonan, et al. 2010) on the prevalence of MS, the disease affects more than 1 million people across the world, and approximately 85% of those that are affected will suffer from unpredictably occurring sessions of exacerbations and remissions. The report (Noonan, et al. 2010) found that the prevalence of MS was much higher in women than in men, and that it was also higher in non-Hispanic whites than in other racial or ethnic groups throughout the 3 regions of the United States that were studied.
Multiple sclerosis (MS) is generally thought to be an autoimmune disease that attacks the myelin sheaths, or oligodendrocytes that cover nerve axons in the central nervous system (PubMed Health 2013). This immune response causes inflammation, which triggers immune cells to destroy axons “along any area of the brain, optic nerve, and spinal cord” (PubMed Health 2013). When the myelin sheath “is damaged, nerve signals slow down or stop” thus hindering the propagation of action potentials and limiting function (PubMed Health 2013).
So what is happening chemically to the people with MS? The disease is an Autoimmune which this will destroy the cells which are in your body. The immune system is going to attack the tissue which it is going to affect the Myelin. When the Myelin is damaged which is when the T cells over react , and cause them to damaged. That is what happens Chemically with MS people.
According to National Multiple Sclerosis Society, Multiple Sclerosis (MS) is an unpredictable, often disabling disease of the central nervous system (CNS) that disrupts the flow of information within the brain, and between the brain and body. The central nervous system (CNS) comprises of the brain and the spinal cord. CNS is coated and protected by myelin sheath that is made of fatty tissues (Slomski, 2005). The inflammation and damage of the myelin sheath causing it to form a scar (sclerosis). This results in a number of physical and mental symptoms, including weakness, loss of coordination, and loss of speech and vision. The way the disease affect people is always different; some people experience only a single attack and recover quickly, while others condition degenerate over time (Wexler, 2013). Hence, the diagnosis of MS is mostly done by eliminating the symptoms of other diseases. Multiple sclerosis (MS) affects both men and women, but generally, it is more common in women more than men. The disease is most usually diagnosed between ages 20 and 40, however, it can occur at any age. Someone with a family history of the disease is more likely to suffer from it. Although MS is not
A bunch of nerves put together is called the Nervous system. The Nervous system helps with body coordination and provides sensory information about external problems. The nervous system controls the brain, spinal cord, sense organs, etc. Without our nervous system, we would not be able to function, since
Multiple Sclerosis (MS) is a complicated chronic deteriorating disease that has an effect on the central nervous system (CNS). This disease causes destruction of the myelin around the nerve fibers. “The exact etiology of Multiple Sclerosis is unknown; however, it is thought to be an immune mediated disease. MS is characterized by CNS inflammation, demyelination, and axonal loss” (Compston & Coles, 2008). Typically, it is described by early relapses and remissions of neurological signs of the CNS. This is known as relapsing-remitting MS (RRMS). MS can be identified by a variety of known risk factors. Multiple Sclerosis can be brought on by a mixture of inherited and environmental risk factors such as smoking or an exposure to a virus like Epstein Barr. The inflammatory process has an interesting role on the central nervous system.
Primarily, the term MS refers to a chronic disorder that attacks the central nervous system (CNS). It is most common in temperate continents such as Europe and Australia with Asiatic and African continents having a lower risk of the disease (Wiley Online Library, 2013). A search organised by the Multiple Sclerosis Society (2013) has estimated that there are 127,000 people living with MS in the United Kingdom. Further research by Chipps, Clanin, and Campbell (1992, pp. 158-167) shows that MS disorder more likely affects women than men with its symptoms occurring between the ages of 20 and 40 in most cases and is quite uncommon in childhood and old age. The nerve cells known as neurons in the brain constantly transmit and receive signals. They invoke emotions, activities and cognition that constitute the day to day experiences of humans. Under normal circumstances, these signals travel on a protected insulation path known as the myelin sheath. This insulation is vital as it enables signals to reach their target. In Multiple Sclerosis, the myelin sheath gets disintegrated causing the nerve fibre to be damaged leading to a disruption in the abili...
... resulting impairment to the CNS. The first group of mice exhibited a pattern of CNS inflammation that resembled that of the most common subtype of MS, RRMS, with lesions filled with macrophages, a type of immune defender cell. The second group of mice displayed inflammation deep in the CNS tissues and in the optic nerve with lesions filled with neutrophils, another type of immune cell. Both groups of mice were given antibody drugs similar to drugs being developed against MS in humans. The effects were observed over time and results showed that some of the drugs inhibited disease in the first group of mice but did not inhibit disease in the second group. Thus, as Mark Kroenke (2008), the study’s first author and a Ph.D. student in immunology at U-M stated, "That's our proof that these really are different mechanisms of disease" (Kroenke et al., 2008).
Multiple sclerosis, also known as MS, is one of the humankind’s most mysterious diseases. Multiple sclerosis has the ability to affect nearly 3 million people worldwide. This disease tends to be more common in individuals of northern European descent and women are more than twice as likely to develop multiple sclerosis as men are. Of those 3 million people, most of them are between the ages of 20 and 50 years old. Even though multiple sclerosis is a mystery disease, scientists are working to determine the exact cause and treatment.
Multiple Sclerosis is a nervous system disease that affects the spinal cord and the brain by damaging the myelin sheaths that protects nerve cells. Destroyed myelin prevents messages from communicating and sending properly from the brain, through the spinal cord, to internal body parts. In the United States, more than 350,000 people are diagnosed with this disease. Anyone can get this disease, but it is more common among Caucasian women. MS symptoms begin between the ages 20-40 and are caused by nerve lesions being present in multiple areas of the Central Nervous System, symptoms differ on the lesion’s location.
The human nervous system is divided into two parts, the central nervous system and the peripheral nervous system. The central nervous system, CNS, is just the brain and spinal cord. The peripheral nervous system, PNS, includes the nerves and neurons that extend outwards from the CNS, to transmit information to your limbs and organs, for example. Communication between your cells is extremely important, neurons are the messengers that relay information to and from your brain. Nerve cells generate electrical signals to transmit information.
The nervous system is composed of all nerve tissue in the body. This organ system forms a communication and coordination network between all parts of the body. It plays a major role in everyday activities such as breathing, walking even blinking. It is made up of nerve tissues to receive and transmit stimuli to nervous centers and initiate response. Neurons are nerve cells that transmit signals from one location of the body to another. With damage to the nervous system the body would not be able to function properly. The body has to be well taken care of in order to insure proper regulation. The two anatomical divisions that work hand in hand to help regulate the nervous system are the central and peripheral nervous system. According to the Campbell’s seventh edition biology book the nervous system is the most intricately organized data processing system on earth. It is a complex collection of nerves and specialized cells.
Nervous system is one of the major organ systems that is responsible for the coordination of biological activities inside the body through cells called neurons. It is composed of the brain and spinal cord which are surrounded by protective layers of bone and membrane tissues called meninges. There are two major divisions in the nervous system; first one is the central nervous system (CNS) and the other being the peripheral nervous system (PNS). The CNS is composed of the brain, spinal cord, and retina while the PNS includes the sensory neurons, ganglia, and connecting neurons. The nervous system applies control using nerves; almost as if sending a message by a telephone. The nervous system is fast due to its electrical nature. The nerve cells in this system are connected with each other in a complex manner where the neural pathways would be possible. Neural
The nervous system’s main function is to coordinate all of the activities in the body. The main organs are the cerebellum, which controls and coordinates movement. The cerebrum, is the center for conscious thought, learning, and memory. The last main organ is the brain stem. The brain stem keeps the automatic systems in your body working. Problems of the nervous system include, epilepsy, Alzheimer’s, and multiple sclerosis. You can care for your nervous system by wearing a seatbelt, wearing a helmet, and by not using drugs or alcohol. Something very confusing about the nervous system is that the left side of human brain controls the right side of the body and the right side of the brain controls the left side of the body!