Polymethylmethacrylate‚ or PMMA for short‚ is a polymer consisting of the monomer methyl methacrylate that has been around since the 1930s1. PMMA is a polymer that has a high impact strength‚ is scratch and shatter resistant‚ and is relatively lightweight1. Because PMMA can also be formed into a transparent thermoplastic and has a glass transitions temperature of 130oC‚ this polymer served as a glass substitute in its early uses1. Other beneficial characteristics of Polymethylmethacrylate include
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Cyril MIller Per.6 Spinal Muscular Atrophy Spinal muscular atrophy is a group of inherited diseases that cause muscle damage and weakness‚ which get worse over time and eventually lead to death. Causes: Spinal muscular atrophy (SMA) is a collection of different muscle diseases. Grouped together‚ it is the second leading cause of hereditary neuromuscular disease‚ after Duchenne muscular dystrophy. Most of the time‚ a person must get the defective gene from both parents to be affected. About 4
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Muscle Test #1 Study Guide 1. What are the primary functions of muscles? What are skeletal muscles made of? Five Skeletal Muscle Functions 1.Produce movement of the skeleton •By pulling on tendons that then move bones 2.Maintain posture and body position 3.Support soft tissues •With the muscles of the abdominal wall and the pelvic floor 4.Guard entrances and exits •In the form of sphincters 5.Maintain body temperature •When contraction occurs‚ energy is used and converted to heat
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Muscular Dystrophy‚ Affects and Diagnosis Muscular dystrophy or MD is a broad medical term used to refer to a number of muscle diseases that weaken the musculoskeletal system and hampers movement according to Yeole‚ Gurunani‚ Dhole and Yogesh (2014). Emery (2002) states these disorders produce muscle wasting and weakness of variable distribution and severity. Muscular dystrophies are caused by genetic mutations that have a progressive degenerative effect on an individual’s muscles stated Punnoose
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performance. Muscle fatigue and the tension associated with it can result from a number of different factors. The athletes may simply have over exerted themself physically in training or competition leading to muscular fatigue from pushing their physical limits. They also may have drained their body and mind from mental stress with regards to performance or outcome. This is described in General Adaptation Syndrome (GAS) as originally described by Hans Selye and describes the body’s
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Muscular Strength and Endurance Lab The purpose of this lab was to provide muscular fitness tests to assess upper and lower body muscular strength and muscular endurance using resisted exercise or exercise machines. This was done through a number of tests including: max push-ups‚ max curl-ups‚ bench press‚ and leg press. Using a chart‚ the student was able to compare their max repetition of each exercise to the normal range for their age group. Muscular fitness tests are classified as increasing
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What is organizational structure An organizational structure consists of activities such as task allocation‚ coordination and supervision‚ which are directed towards the achievement of organizational aims. It can also be considered as the viewing glass or perspective through which individuals see their organization and its environment. Organizations are a variant of clustered entities. An organization can be structured in many different ways‚ depending on their objectives. The structure of an
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MUSCLE FATIGUE HOW DO MUSCLES GET THE ENERGY TO WORK? In muscles‚ it is essential that Calcium is present‚ as this gives the muscles the ability to contract and relax. For muscles to contract energy is needed: the energy can only be provided by the breakdown of a chemical called adenosine triphosphate (ATP). As ATP is broken down‚ a phosphate molecule is broken off‚ reducing the phosphate molecules‚ from 3 to 2. This produces adenosine triphosphate. However for the muscles contraction to continue
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Denise Lashley-Agard Britney Dumas Natalia Roberts [pic] Table of Content Introduction……………………………………………………………………….Page 3 Signs and Symptoms……………………………………………………………...Page 4 Causes of Chickenpox……………………………………………………………Page 5 Sources of Chickenpox…………………………………………………………..Page 6 Mode of Transmission……………………………………………………………Page 7 Incubation and Possible Complications…………………………………………Page 8 Infectivity of Chickenpox………………………………………………………
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Boston Chicken Case 1. - Assess Boston Chicken’s business strategy. What are its critical success factors and risks? Boston Chicken’s business strategy comes from a different franchising structure in which BC‚ instead of selling store franchises to multiple franchisees‚ sells franchises to 22 regional area developers across the 60 largest U.S. metropolitan markets. This 22 are developers are committed to open 50 - 100 other stores. Therefore‚ its strategy is focused in rapid growth and reaching
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