• Anatomy
    ___4___ is the response of a muscle to a single, brief threshold stimulus. When the frequency of stimulation is so high that the muscle tracing shows fused peaks, ___5___ has been achieved. ___6___ is the stimulus strength at which the first observable muscle contraction occurs The phenomenon...
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  • HSC PDHPE Core 2 Notes - Factors Affecting Performance
    FQ1: How does training affect performance? Energy Systems   Alactacid system or ATP/PC Lactic acid system or Anaerobic glycolysis Aerobic glycolysis system How it works After muscular contraction ATP is broken down to form ADP. Phosphocreatine (PC) is then broken down to form creatine and...
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  • Skeletal Muscle Lab
    | | | | | | | [pic] In this part of the experiment, we increased the stimulus intensity to see if it affects the muscle response. The increase in voltage increased the peaks of the tracings. It also increased the active force. The voltage beyond no further increases in active force was 8.5v...
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  • anatomy
    NAME __Molly Manning__ LAB TIME/DATE ___10/24/13__ Exercise 2 Skeletal Muscle Physiology The Muscle Twitch and the Latent Period 1. Define the terms skeletal muscle fiber, motor unit, skeletal muscle twitch, electrical stimulus, and latent period. Skeletal muscle fiber-fibers attached to...
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  • Fart
    muscle generates during the stimulated twitch? Total force would decrease and muscle lengy decreased, and kept decreasing when it was stretched till it was stretched to 100mm then it increased 38. Based on the unique arrangement of myosin and actin in skeletal muscle sarcomeres, explain why active...
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  • Physiology
    muscle cell is “myofibril.” 3. The largest active force that could be generated in the muscle is Activity 1 was _______ grams. 4. Define the terms skeletal muscle fiber, motor unit, skeletal muscle twitch, electrical stimulus, and latent period. 5. What is the role of acetylcholine (ACh) in...
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  • Muscle Phsyiology
    , local, involuntary muscle contraction and relaxation visible under the skin. B. According to the graphs, which muscle has the fastest twitch? Why? The lateral rectus eye muscle has the fastest twitch. It has the shortest latent period, or the shortest period of time between the stimulus and its...
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  • Mrs Peterkin
    . Describe the effect of increasing stimulus voltage on isolated skeletal muscle. Specifically, what happened to the muscle force generated with stronger electrical stimulations and why did this change occur? How well did the results compare with your prediction? As the voltage increases past the...
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  • Phyisoex 9.0 Reveiw 2
    skeletal muscle. Specifically, what happened to the muscle force generated with stronger electrical stimulations and why did this change occur? As the stimulus voltage is increased past the muscle's threshold voltage, the amount of force in the entire muscle increases. Each time the voltage was...
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  • Exercise 2: Skeletal Muscle Physiology
    muscle cell is “myofibril.” FALSE 3. The largest active force that could be generated in the muscle is Activity 1 was _______ grams. 1.82 GRAMS 4. Define the terms skeletal muscle fiber, motor unit, skeletal muscle twitch, electrical stimulus, and latent period. SKELETAL MUSCLE FIBER – SKELETAL...
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  • Physioex 9.0 Exercise 2
    | |Define the terms skeletal muscle fiber, motor unit, skeletal muscle twitch, electrical stimulus, |Skeletal muscle fiber- is one of hundreds to thousands of | |and latent period...
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  • Physiolab 9.0 Exercise 2
    Contraction 1. Describe the effect of increasing stimulus voltage on isolated skeletal muscle. Specifically, what happened to the muscle force generated with stronger electrical stimulations and why did this change occur? How well did the results compare with your prediction?  As the stimulus voltage is...
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  • Muscle Lab
    one neuron _______2. wave summation b. affects the force a muscle can generate _______3. multiple motor unit summation c. a single contraction of intact muscle _______4. resting length d. recruitment _______5. resistance e. increasing force produced by increasing stimulus...
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  • Que Que Que
    tracings, this is when the muscle is going back to its original state of relaxation and the muscle will once again lengthen 22. Does the duration of the latent period change with different stimulus voltages? Why or why not? Only the period of contraction and relaxation change. No...
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  • Exorsize 1
    . | |Define the terms skeletal muscle fiber, motor unit, skeletal muscle twitch, electrical stimulus, |Skeletal muscle fiber Is another name for muscle fiber. | |and latent period...
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  • Skeletal Muscle Physiology
    test your hypothesis and try rapidly clicking Single Stimulus several times. At what voltage were you able to achieve Active Force =2 gms? 7. How does the frequency of stimulation affect the amount of force generated by the muscle? Hint: Compare the force generated from a single click and from...
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  • Lab Frog Muscle (Guide Experiment)
    to: 1. Define minimal (threshold), subminimal, maximal, and supramaximal stimulus. 2. Explain what is meant by a “graded” response. 3. Draw a diagram of the setup used in this lab exercise. 4. Calculate the work that is done in a given muscle. 5. Describe the function of a force...
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  • Anatomy Chapter 9 Notes
    “myofibril.” False-Skeletal Muscles are composed of muscle fibers. 3. The largest active force that could be generated in the muscle is Activity 1 was _______ grams. 1.82 grams 4. Define the terms skeletal muscle fiber, motor unit, skeletal muscle twitch, electrical stimulus, and latent...
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  • Anatomy Muscles
    allows cross bridge formation The Graded Muscle Response to Increased Stimulus Intensity 3. From Activity 3, describe the effect of increasing the voltage. What happened to the force generated and why did this change occur? The force is greater and there is a higher contraction force because...
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  • Electromyogram
    Sarah Shidban Lab 1 Ali Izadpanah July 12, 2013 Electromyogram Experiment 1: (i) See Figure 1 for trace. Figure 1 is measuring the activity (force and time of contraction) of the entire muscle, which consists of several types of muscle fibers (Type I or slow twitch, Type IIa or...
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