Exercise 8 Simple Muscle Contraction • 3 Phases AB - lag phase or latent phase - (shortest) 0.00sec‚ usually less than 0.01sec - brief period that exists between the application of the stimulus and the start of contraction BC - contraction‚ 0.05sec - peak - shortening of the muscle occur CD - relaxation period‚ 0.05 sec - Occurs when Ca+ is transported back in the sarcoplasmic reticulum Single muscle contraction= 100vib/sec (tuning fork)= 0.10 sec 10vib (result) Neuromuscular junction - formed when
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solution |e. hypotonic | | |f. isotonic | |__A__ the movement of molecules from an area of higher |g. hypertonic | |concentration to an area of lower concentration as a result of | | |random thermal motion
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Experimental Design Report Directions: To complete this assignment‚ you will ask a scientific question‚ write a hypothesis‚ and design an experiment to test your hypothesis. Think about an observation you have made recently. What kind of question or problem was revealed by your observation? Write a hypothesis to address your question or problem. Then use the scientific method to design an experiment to answer this question or solve this problem. Record all the steps in your experiment. You do
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hysioEx 9.0 – Exercise 2: Skeletal Muscle Physiology Name: Chart 1: Latent Period Results Voltage Active force (g) Latent period (msec) 0.0 0.00 XXXXXXXXXX 3.0 1.04 XXXXXXXXXX 4.0 1.32 2.40 6.0 1.65 2.40 8.0 1.81 2.40 10.0 1.81 2.40 Chart 2: Effect of Stimulus Voltage on Skeletal Muscle Contraction Voltage Active force (g) 0.0 0.00 0.2 0.00 0.8 0.02 1.0 .15 1.5 .43 2.0 .66 2.5 .87 3.0 1.64 3.5 1.19 4.0 1.32 4.5 1.42 5.0 1.51 5.5 1.59 6.0 1.65 6.5 1.70 7.0 1.74 7
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Frog Skeletal Muscle The aim of this experiment is to explore the basic physiological principles of skeletal muscle using the isolated frog (Rana pipiens or Xenopus laevis) gastrocnemius muscle. Students will dissect a double-pithed frog. Then‚ they will connect the muscle to the Force Transducer to measure twitch recruitment‚ effect of stretch‚ muscle summation‚ muscle tetanus‚ and muscle fatigue. Written by staff of ADInstruments. Experiment Contents 1. Instructor’s Reference (this
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Bones to Muscles – How Do We Move? Author Note This Bones to Muscles- How Do We Move Assignment is being submitted on October 27th‚ 2013 for Heather Heck’s Section 21 Structure and Function of the Human Body Class. 1. Bone is a very active tissue. Please explain the pathway of how the bone cells get nutrients and oxygen from the blood vessels using the following terms: Periosteum‚ endosteum‚ lacunae‚ lamellae‚ canaliculi‚ perforating canals‚ osteon‚ Haversian
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Chapter Three Experimental Work 3.2 The Experimental Rig A photograph of the experimental rig of AGMD system is shown in Figure (3-1) and the general layout of the system is shown schematically in Figure (3-2). The details of the AGMD system‚ equipment‚ measuring instruments are given in the following sections. Figure 3-1: Photograph of AGMD system. 1. Water Bath 6. Temperature sensor 2. Peristaltic pump 7. Glass Trap 3‚9. Valve 10. Chiller 4‚8. Pressure gauge 11. Data Acquiesce 5. Membrane
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A life that has no more poverty and women are able to break out of their traditional roles. Therefore‚ she was so determined to pursue this "Englishness" that she would never ever give up her dream no matter how harsh things had turned out for her. Apart from that‚ she was also able to see how differently things were for the English educated people like Nhamo and Babamukuru. Both of them were highly respected and had the power to make people listen to them. She wished to be one of them and knew very
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NATIONAL CENTER FOR CASE STUDY TEACHING IN SC CE Wearing on Her Nerves: Exploring the Interrelation between the Nervous and Muscular Systems by Kathleen G. Brown‚ Nursing Department Sharon S. Ellerton‚ Biological Sciences and Geology Queensborough Community College‚ City University of New York Part I – Rise and Shine? Kathy‚ a 20-year-old woman‚ awakens one morning to a tingling‚ numb sensation covering both of her feet. This has happened to her a number of times throughout the year
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Activity 1 – The Muscle Twitch and Latent 1) Define the terms skeletal muscle fiber‚ motor unit‚ skeletal muscle twitch‚ electrical stimulus‚ and latent period. Skeletal Muscle Fiber: Skeletal muscle cells that are composed of hundreds to thousands of individual cells that produce muscle tension. These fibers are what move our bodies and generate muscle tension/force that enables us to have manual dexterity. Motor unit: consists of one motor neuron and all of the skeletal muscle fibers that it
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