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 you explain the increase
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Name: lily Exercise 6: Cardiovascular Physiology: Activity 1: Investigating the Refractory Period of Cardiac Muscle Lab Report Pre-lab Quiz Results You have not completed the Pre-lab Quiz. 07/10/13 page 1 Experiment Results Predict Question: Predict Question 1: When you increase the frequency of the stimulation‚ what do you think will happen to the amplitude (height) of the ventricular systole wave? Your answer : a. The amplitude will increase. Predict Question 2: If you deliver multiple
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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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Anatomy Review: Skeletal Muscle Tissue Graphics are used with permission of: Pearson Education Inc.‚ publishing as Benjamin Cummings (http://www.aw-bc.com) Page 1. Introduction • Skeletal muscle cells have unique characteristics which allow for body movement. Page 2. Goals • To compare and contrast smooth muscle cells‚ cardiac muscle cells‚ and skeletal muscle cells. • To review the anatomy of skeletal muscle. • To examine the connective tissue associated with the skeletal muscle. • To review
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ACTIVITY 6: The Skeletal Muscle Length-Tension Relationship 33. In a force-length graph‚ a. the muscle length is the independent variable. b. the amount of force generated is the dependent variable. c. both active and passive forces must be considered. d. All the above are correct. correct answer 34. According to your lab manual‚ the protein titin is the primary cause of _________ __________. Passive Force 35. In this lab simulation‚ the muscle length of _______
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Most of our skeletal muscles are attached to bone on either end by tendons. As the muscles contract‚ they exert force on the bones. This force helps to support and move our body. Normally one end of the muscle is fixed in its position and the other end moves during contraction. The Origin is the attachment site that is stationary during contraction. The insertion is the site that does move when a muscle contracts. When we discuss the position of the Origin and insertion points‚ the insertion
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Muscle contractions and stimulations play a very integral part in the functioning of an organism and muscles are especially function for force production and motion all this is highly influenced by specific temperatures‚ electrical impulses‚ proteins and enzymes and other factors that occur whether on the inside or the external environment of an organism (Amitrano & Tortora‚ 2012). Proteins as defined by Cheeke 2010‚ are molecules that are made up of amino acids and are responsible for almost all
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LABORATORY REPORT Activity 2 Twitch Contractions and Summation Name Instructor Date PREDICTIONS Effect of Muscle Fiber Length on Contraction 1. As muscle fiber length increases Effect of Stimulation Frequency on Contraction 2. As the frequency of stimulation increases‚ the force of contraction MATERIALS AND METHODS Measurement of Threshold Stimulus 1. Dependent Variable 2. Independent Variable 3. Controlled Variables Effect of Muscle Length on Contraction 1. Dependent Variable 2. Independent Variable
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Exercise 2: Skeletal Muscle Physiology Worksheet Single Stimulus Activity 1: Identifying the Latent Period 1. How long is the latent period? 2.78 msec 2. Does the latent period change with different stimulus voltages?No Activity 2: Identifying the Threshold Voltage 1. What do you see in the Active Force display?I saw a very slight peak at .8 2. What is the threshold voltage? .8 V 3. How does the graph generated at the threshold voltage differ from the graphs generated
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7.3 Explaining the effects of aging on joints. Competency 8: The Muscular System Upon successful completion of this course‚ the student will be able to understand the muscular system by: 8.1 Describing the location‚ function(s)‚ and characteristics of each type of muscle tissue: smooth‚ cardiac‚ and skeletal. 8.2 Explaining the major events that occur during muscle fiber contraction. 8.3 Describing the sources of ATP and oxygen necessary for muscle contraction. 8.4 Describing how exercise
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