1) What is the role of calcium ions during contraction of a skeletal muscle? Calcium is an important element for live. Calcium is found in the bones of animals and humans. In muscle contraction is produce as a result of Calcium ions ‚ Ca2+‚ It comes from rapid release from the cisternae of the sarcoplasmic reticulum which cause a chemical reaction between ATP and the myofilaments. Another important function of Calcium ions occurs during the state of resting muscle. During the state of resting
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is the latent period? 2.78 msec. 2. What occurs in the muscle during this apparent lack of activity? Ca++ is being released from the sacroplasmic reticulum and filament movement is taking up slack. Activity 3: Investigating Graded Muscle Response to Increased Stimulus Intensity 1. Use your graph to answer and note that the dot in the graph turns red when you select that line in the table. What is the minimal‚ or threshold‚ stimulus? 0V. 2. What is the maximal stimulus? 10V. 3. How can
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Different kinds of liquids stain your teeth differently. For example tea stains your teeth more than milk does. I’m doing this experiment because I think it is very interesting that there are so many different kinds of liquid that can stain your teeth. What things stain your teeth? To start with you should never start smoking or use tobacco. The nicotine and tar in the cigarettes stain your teeth very drastically. You can’t even imagine how fast smoking stains your teeth. Other things that stain your
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Introduction: In this lab‚ I will study how muscles contract‚ what makes muscles contract‚ different types of muscle contraction‚ and learn about how resistance affects muscle contraction. I will define Key Terms that describe what will occur in the experiments; I will conduct an experiment for each Activity and provide all resulting Data as well as answer Questions from each Activity. I will then provide a short Summary for what I learned in each Activity. Key Terms: Recruitment (or Multiple
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CA research 1How do muscles get the energy they need to work All muscles need ATP (ATP is a ‘energy currency’) most of these cell reactions rely on the breakdown of ATP the ways to get atp are to react anaerobically or aerobically. The “ reactions form energy in the format of ATP’’ ATP (also known as adenosine tri-phosphate) is produced. Respiration is conducted from the cell membranes inside the mitochondria. Aerobic respiration provides a lot of energy needed per molecule of glucose (the level
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Over time‚ transportation has shown to have an incredible impact on the United States. It has revealed to bring about economic and social changes in various ways. Americans were aware that if transportation advancement occurred‚ it would potentially increase foreign trade‚ increase land values as well as strengthen the American economy. In the mid 1800s it has been determined that transportation advancement has a drastic effect on our lives even today. Canals‚ Railroads and Roads have a major
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What Happens to Economy when Government Raises Taxes? Terry Burchett ECO100 Survey of Contemporary Economic Issues Ramzi Salloum July 23‚ 2012 While should the government increases tax rate on everyone as a way to equalize incomes and wealth? It would make it easier for many people and make it fair for the poor and middle class citizens. Government officials that are elected are there to take care of policies and programs. Because when Gross Domestic Product( GPD) taxes increase spending
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young they won’t be ready when they get older and they won’t know anything about it. Another reason is because if you start them off young you can figure out if they like the sport or not because you shouldn’t force them to play it should be their choice. One final reason is because if you start them off young they will get better and stronger by the time they get to middle school and high school and they would play a lot better than they would have if their first time playing was in high school
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In the article “Fatigue” Brody explains that people have recently been complaining more today about fatigue then when people were actually doing more labor‚ he then informs us of three types of fatigue Pathological fatigue‚ Physical fatigue and Psychological fatigue‚ and not only there causes of Physical exertion but their cures. Pathological fatigue is described as sick symptoms underlying a physical symptom. Some could be as small as having a cold or flu while‚ on the other hand it could be something
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International Trade and Finance Speech What happens when there is a surplus of imports into the U S: A surplus of imports is good for consumers but bad for local business. We have to produce and manufacture in order to export. As our export trade shrinks‚ so does our workforce and economy. The surplus of imported cars for 2012 has exceeded the exportation by $152 billion. Also the shelf life of cars is 1 year. Every year at the end of the cycle the existing models are sold off at huge discounts
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