• Skeletal Muscle Physiology Physioex Exercise 2
    exercise. A C T I V I T Y 1 Identifying the Latent Period How long is the latent period? _____2.78____ msec Note: If you wish to print your graph, click Tools on the menu bar and then click Print Graph. 5. Increase or decrease the stimulus voltage and repeat the experiment. (Remember that you can...
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  • Physioex9.0 Review Sheet 3
    extracellular K+ causes the membrane potential to change to a less negative value because when K+ ions diffuse out across the membrane they are leaving behind a net negative charge. 2. Explain why increasing extracellular K+ causes the membrane potential to change to a less negative value. Potassium ions...
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  • Mrs Peterkin
    physioex 9.0 Purpose Does the duration of the latent period change with different stimulus voltage? What is the role of acetylcholine in a skeletal muscle contraction? Hypothesis I predict that the latent period will not change if the stimulant is increased or decreased. Materials ...
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  • Physio Ex 9.0 Exercsie 3
    and less potassium diffuses out of the neuron and into the cell. 2. Explain why increasing extracellular K_ causes the membrane potential to change to a less negative value. How well did the results compare with your prediction? _______________________________________________________________________ ...
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  • anatomy
    ___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 the skeleton that produce muscle tension. Motor...
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  • Phisioex 9 Skeletal Muscle
    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 ...
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  • Exercise 2: Skeletal Muscle Physiology
    registered in your “Gradebook”. |ACTIVITY 1: The Muscle Twitch and the Latent Period |Answers | |The latent period of the skeletal muscle that was tested in this lab simulation was ...
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  • activity 2
    Name: Cassidy Lessig Activity 1 The Muscle Twitch and the Latent Period 1. 1. Define the terms skeletal muscle fiber, motor unit, skeletal muscle twitch, electrical stimulus, and latent period 2. What .is the role of acetylcholine in a skeletal muscle contraction? Skeletal muscle fiber-Skeletal...
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  • Single Stimulus Physio Lab 8
    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? Leveled line ...
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  • Phyisoex 9.0 Reveiw 2
    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....
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  • Physioex
    less of it (K+) goes into the cell. Therefore, the cell depolarizes. 2. Explain why increasing extracellular K+ causes the membrane potential to change to a less negative value. How well did the results compare with your prediction? Your answer: When K+ ions diffuse out of the membrane, it leaves...
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  • Physioex 9.0 Exercise 2
    registered in your “Gradebook”. |ACTIVITY 1: The Muscle Twitch and the Latent Period |Answers | |The latent period of the skeletal muscle that was tested in this lab simulation was ...
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  • Nerve System
    Nerve: —  Excitability –  stimulus applied to the nerve causes the production of a nerve impulse (electrical) —  Conductivity –  propagation of action potential Nerve cells are the functional unit of the nervous system Specialized regions of neurons carry out 
 different functions:# Synapses...
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  • Physioex 9.0 Exercise 3
    gradient from a region of higher concentration to a region of lower concentration. 2. Increasing extracellular K+ causes the membrane potential to change to a less negative value because the K+ ions diffuse out across the membrane. My results went well compared to my prediction because I predicted that...
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  • Chsc 2p09 Quiz Two Notes
    (extracellular concentration)? a. 150 mM Experiment Results 1. What is the polarity of the resting membrane potential (voltage)? b. negative 2. What does it mean that the voltage just inside the membrane is negative? b. There are more negative charges than positive charges just inside the membrane...
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  • Miss
    Exercise 2: Skeletal Muscle Physiology: Activity 1: The Muscle Twitch and the Latent Period Lab Report Pre-lab Quiz Results You scored 60% by answering 3 out of 5 questions correctly. 1. Skeletal muscles are connected to bones by You correctly answered: b. tendons. 2. Skeletal muscles are composed of...
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  • Physiolab 9.0 Exercise 2
    _______________________ 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. Motor unit- single α-motor neuron and all of the corresponding muscle fibers it innervates;...
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  • Skeletal Muscle Physiology
    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....
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  • Excersice 02-01
    Exercise 2: Skeletal Muscle Physiology: Activity 1: The Muscle Twitch and the Latent Period Lab Report Pre-lab Quiz Results You scored 100% by answering 5 out of 5 questions correctly. 1. Skeletal muscles are connected to bones by You correctly answered: b. tendons. 2. Skeletal muscles are composed of...
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  • Skeletal Muscle Lab
    this experiment, when we used a single electrical stimulus, it resulted in a muscle twitch with three phases: latent period, contraction phase, and the relaxation phase. Activity 1: Figure 1: Identifying the latent period [pic] The Latent Period of time that elapses between the generation of an...
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