isolated frog muscle could be made to contract when the sciatic nerve was irritated with a metal object‚ conducted the first muscle experiments between 1661 and 1665. Later‚ between 1737-1798 Luigi Galvani determined that frog muscle responded to electrical currents. The kymograph‚ which was invented in the late 1840’s lead to the revolution of experimental physiology because it enabled muscle contractions to be analyzed and recorded. The muscle cell or fiber is the basic unit of a muscle. The frog gastrocnemius
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a. a single muscle fiber plus all of the motor neurons that innervate it b. all of the motor neurons supplying a single muscle c. *a single motor neuron plus all the muscle fibers it innervates d. a pair of antagonistic muscles e. all of the muscles that affect the movement of any given joint 2. Which of the following is NOT associated with the thin filaments in skeletal muscle: a. tropomyosin b. *titin c. actin d. troponin e. nebulin 3. What produces the
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What are the required skills for system analyst? Introduction Systems analysis and design‚ as performed by systems analyst‚ seeks to understand what humans need to analyze data input or data flow systematically‚ process or transform data‚ store data‚ and output information in the context of a particular organization or enterprise. By doing thorough analysis‚ analyst seek to identify and solve the right problems. Furthermore‚ systems analysis and design is used to analyze‚ design‚ and
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the muscle fiber it controls. A whole muscle is made up of hundreds of motor units that are handled by different motor neurons that react at different levels of stimulation. The electric shock acts as an action potential by changing the membrane permeability allowing the sodium and potassium ions to pass through. At different levels of stimulation the motor neurons stimulate a motor unit and the more stimulation the more motor units become active. When the voltage was set at 0 or .1 there was no reaction
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Math Questions & Answers GRADE 1 What five coins add up to a nickel? five pennies (1 + 1 + 1 + 1 + 1 = 5) GRADE 2 Which is longest: a foot‚ a yard or an inch? a yard (3 feet = 1 yard; 12 inches = 1 foot) GRADE 3 What do you call the answer to a multiplication problem? the product GRADE 4 How many zeros are in the number one million? six (6) GRADE 5 Simplify the fraction 32/8. 4 GRADE 6 How do you represent the fraction 3/4 as a decimal? .75 GRADE 7 Find the fraction
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Ruel Wallace Add Maths S.B.A Mr. Teesdale 5-8 Table of Contents Cover page……………………………………………………………………………………………1 Table of contents…………………………………………………………………………………..2 Title……………………………………………………………………………………………………...3 Problem Statement………………………………………………………………………………..4 Mathematical Formulation…………………………………………………………………….5 Problem Solution…………………………………………………………………………………..7 Application of Solution…………………………………………………………………………14
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1920’s "The best of times‚ the worst of times." The 1920’s was not a "roaring" time for immigrants and citizens of America. It harbored some of the harshest laws and brutal government restrictions. Immigrants were cast out by a post war country and alcohol banned in hopes of making our country purer. The 1920 was not the best of times. The prohibition of alcohol in the United States lasted from 1920 until 1932. The movement began in the late nineteenth century‚ and was fueled by the formation
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What kept the Roman Empire together? The Romans were people from a city called ‘Rome’‚ this was the greatest city of it’s time‚ at one point‚ there was nearly 1 million people living there. The Romans were very powerful people‚ who were extremely good at planning and fighting for Rome. The Roman Empire was a place‚ where the Roman army would gather to discuss their plans on how to make things better in the army. In my opinion‚ the least important reason for ‘What kept the Roman
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Communism is a system where there is no private ownership of business or property and the country’s wealth gets shared among the population. Vladimir Lenin started the communist international which was an organisation with an aim of spreading communism throughout the world. Communism really was a threat to Australians in the 1950s‚ the events of the Korean War‚ different alliances being formed‚ the banning of the Communist party of Australia (CPA) and the Petrov affair all tell us that communism
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muscle contraction Introduction For a skeletal muscle fiber to contract‚ a stimulus must be applied to it. The stimulus is delivered by a nerve cell‚ or neuron. A neuron has a threadlike process called and axon that my run 91 cm or more to a muscle. A bundle of such fibers from man different neurons composes a nerve. A neuron that stimulates muscle tissue is called a motor neuron. The motor neuron branches into terminal structures called telodendria that come into close approximation with
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