Experiment 2: Skeletal Muscle ABSTRACT Frog skeletal muscle is used as an animal model to study muscle contraction. The objectives of this experiment is to demonstrate the physiological responses of skeletal muscle to electrical stimuli using frog gastrocnemius‚ to understand twitch‚ summation‚ tetanus and fatigue‚ to investigate the relationship between initial tension and force of contraction‚ to explore the differences between human and frog skeletal muscle. The threshold voltage is 0.4V. The
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Muscle Physiology Purpose: What is the purpose of this exercise? Are there any safety concerns associated with this exercise? If so‚ list what they are and what precautions should be taken. Refer to the appendix of this manual if you need a tutorial on how to make graphs in Microsoft Excel®. Exercise 1: Muscle Twitch Data Table 1A: Muscle Twitch of Rectus Data Table 1B: Muscle Twitch of Lateralis Eye Muscle Quadriceps Femoris Time (milliseconds) Tension (kilogram-force)
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October 19th‚ 2013 1A Orthographic vs. Isometric By Adam Almassri If you’ve ever seen a drawing where the three dimensions of the object in the drawing are represented in three seperate views‚ where each view shows one of the three planes from the object‚ that means you’ve seen an orthographic drawing. Now if you’ve ever seen a drawing where the 3D drawing shows all three of height‚ width‚ and depth of the object in a single perspective‚ and the viewpoint being at a 45 degree angle
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SHEET NAME_____________________ LAB 6: Skeletal Muscle Physiology Electrical Stimulation 1. Complete the following statements by filling in your answers on the appropriate lines below. A motor unit consists of a (a) and all the (b) it innervates. Whole muscle contraction is a(n) (c) response. In order for muscles to work in a practical sense‚ (d) is the method used to produce a slow‚ steady increase in muscle force. When we see the slightest evidence of force
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BioLab3 Bones and Muscles Summary Report Student Name: I. Skeletal system A. Long Bone Structure Define the following terms. Bone Organ of the skeletal system Cartilage Serves as a cushion Ligament Dense‚ regular connective tissue/bone to bone Tendons Dense‚ regular connective tissue/ bone to muscle Osteocytes Separated by an extracellular matrix hardened by deposits of calcium salts Diaphysis Long shaft of compact bone Compact bone Solid and dense
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Muscle Tissue Introduction * Motion * Results from alternating contraction (shortening) and relaxation of muscles * Skeletal system * Provides leverage and a supportive framework for this movement * Myology – study of muscles Muscle Tissue * Alternating contraction and relaxation of cells * Chemical energy changed into mechanical energy Types of Muscle Tissue * Skeletal muscle – primarily attached to bones * Striated and voluntary * Cardiac
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lab reports by providing this information in an editable file which can be sent to an instructor. Exercise 1: Muscle Twitch Study the data for the three muscles in Tables 1A‚ 1B‚ and 1C. 1. Make a scatter plot graph in Microsoft Excel® using Data Tables 1A‚ 1B‚ and 1C that show the twitch tension timelines of the eye‚ rectus femoris‚ and plantaris muscle fibers. For each muscle‚ connect the dots together in sequence. Refer to the section in the Introduction of this lab manual titled: “Computer
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E 2 Skeletal Muscle Physiology O B J E C T I V E S 1. To define these terms used in describing muscle physiology: multiple motor unit summation‚ maximal stimulus‚ treppe‚ wave summation‚ and tetanus. 2. To identify two ways that the mode of stimulation can affect muscle force production. 3. To plot a graph relating stimulus strength and twitch force to illustrate graded muscle response. 4. To explain how slow‚ smooth‚ sustained contraction is possible in a skeletal muscle. 5. To graphically
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Lab 3 – Skeletal Muscle Physiology Introduction Skeletal muscles are composed of hundreds to thousands of individual cells‚ each doing their share of work in the production of force. As their name suggests‚ skeletal muscles move the skeleton. Skeletal muscles are remarkable machines; while allowing us the manual dexterity to create magnificent works of art‚ they are also capable of generating the brute force needed to lift a 100-lb. sack of concrete. When a skeletal muscle from an experimental
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an essay on the following topic: "Discuss cultural differences as they exist in American and Vietnamese culture and suggest some ways to overcome them." CONTENT The difference of culture impacts so much to the way to living‚ the way of thinking and the way of doing business. America and Vietnam have a big difference in culture‚ religion and business. However‚ we live in a world where it is called flat world‚ where there is no restriction between countries. It requires us to integrate in order to
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