Preview

Physioex 9.0 Exercise 2

Good Essays
Open Document
Open Document
2319 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Physioex 9.0 Exercise 2
Skeletal Muscle Physiology

Student instructions: Follow the step-by-step instructions for this exercise found in your lab manual and record your answers in the spaces below. Submit this completed document by the assignment due date found in the Syllabus.
Rename this document to include your first and last name prior to submitting, e.g. Exercise2_JohnSmith.doc.
Please make sure that your answers are typed in RED. (You may delete these instructions before submission.)

Grading: True/False, Multiple-Choice, and Fill-in-the-blank type questions will be worth 1 point each whereas Short-answer type questions will be worth 2 points each. This lab will be worth a total of 76 points but will be converted to a percentage grade when 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 |C |
|about 1 second. | |
|less than 1 msec. | |
|between 2-3 msec. | |
|variable, depending on the voltage that was applied to it. | |
|True or False: Another name for a muscle cell is “myofibril.” |False |
|The largest active force that could be

You May Also Find These Documents Helpful

  • Satisfactory Essays

    BIOS252 Week 1 Lab

    • 438 Words
    • 4 Pages

    5. Click on the Skeletal Muscle Cell. Muscle fibers contain bundles of myofibrils. Myofibrils are…

    • 438 Words
    • 4 Pages
    Satisfactory Essays
  • Good Essays

    unit 10 review

    • 1120 Words
    • 5 Pages

    Number the following events of skeletal muscle contraction in the proper order, with number 1 for the first event…

    • 1120 Words
    • 5 Pages
    Good Essays
  • Powerful Essays

    Physioex 9.0 Exercise 3

    • 2112 Words
    • 9 Pages

    Which way would Na+ move across the membrane if there wer open Na channels? A. into the cell…

    • 2112 Words
    • 9 Pages
    Powerful Essays
  • Satisfactory Essays

    What is a cross bridge, where does it form, what molecules are involved, when and how does it form?…

    • 493 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Physio Ex Exercise 5

    • 532 Words
    • 3 Pages

    The following questions refer to Activity 2: Studying the Effect of Viscosity on Fluid Flow.…

    • 532 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Physioex 8.0 Exercise 10

    • 1709 Words
    • 7 Pages

    5. Did the pH level of the blood change at all during this run? If so, how? Yes pH levels in the blood did change, they increased over the course of the run…

    • 1709 Words
    • 7 Pages
    Good Essays
  • Good Essays

    Physioex 9.0 Exercise 2

    • 674 Words
    • 3 Pages

    Experiment Results Predict Question: Predict Question: As the stimulus frequency increases further, what will happen to the muscle tension and twitch appearance with each successive stimulus? Will there be a limit to this response? Your answer : a. As the stimulus frequency increases, the muscle tension generated by each successive stimulus will increase. There will be no limit to this increase. Stop & Think Questions: What begins to happen at around 80 msec? You correctly answered: c. unfused tetanus develops How does the trace at 130 stimuli/sec compare with the trace at 50 stimuli/sec? You correctly answered: b. Fused tetanus develops at this greater stimulus frequency. How do the traces with 146–150 stimuli per second compare with the trace at 130 stimuli per second? You correctly answered: d. Maximal tetanic tension develops with these very high stimulation frequencies. Experiment Data: Voltage 8.5 8.5 8.5 8.5 8.5 8.5 8.5 8.5 Length 75 75 75 75 75 75 75 75 Stimuli/sec 50 130 140 142 144 146 148 150 Active Force 5.12 5.88 5.91 5.94 5.94 5.95 5.95 5.95 Passive Force 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Total Force 5.12 5.88 5.91 5.94 5.94 5.95 5.95 5.95…

    • 674 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    2. Because of the different organs that were removed from the two other rats that would produce certain hormones. My prediction was correct.…

    • 325 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Exercise 2 Physioex

    • 683 Words
    • 3 Pages

    Experiment Results Predict Question: Predict Question: Will changes to the stimulus voltage alter the duration of the latent period? Your answer : a. Yes, changing the stimulus voltage will change the latent period duration proportionately. Stop & Think Questions: What is the period of time that elapses between the generation of an action potential and the start of muscle tension development in a muscle fiber? You correctly answered: c. the latent period What occurs during the latent period of these isometric contractions? You correctly answered: b. All the steps of excitation-contraction coupling occur. Experiment Data: Voltage 0.0 3.0 4.0 6.0 8.0 10.0 Length 75 75 75 75 75 75 Active Force 0.00 1.04 1.32 1.65 1.81 1.82 Passive Force 0.00 0.00 0.00 0.00 0.00 0.00 Total Force 0.00 1.04 1.32 1.65 1.81 1.82 Latent Period ----3.60 2.80 3.20 2.80…

    • 683 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    >> Increasing the efferent radius decreases the glomerular filtration rate. Increasing the efferent radius allows more blood drainage out of the glomerulus and that decreases the amount of blood to be filtered so the glomerular filtration rate will decrease.…

    • 1844 Words
    • 8 Pages
    Good Essays
  • Satisfactory Essays

    Name: Carola Geitner Exercise 10: Acid-Base Balance: Activity 2: Rebreathing Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. In cases of acidosis, the pH of the blood is You correctly answered: c. less than 7.35. 2. Carbon dioxide and water form You correctly answered: a. carbonic acid (a weak acid). 3. Which of the following is true of respiratory acidosis? You correctly answered: c. The amount of carbon dioxide in the blood is greater than normal. 4. Rebreathing You correctly answered: b. is exemplified by breathing into a paper bag.…

    • 394 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Exercise 8 Physioex 8.0

    • 858 Words
    • 4 Pages

    If we left out control tubes, 3, 4 and 5, what objections could be raised to the statement: "Amylase digests starch to maltose"? (Hint: Think about the purity of the chemical solutions.)…

    • 858 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Exercise 2: Skeletal Muscle Physiology: Activity 3: The Effect of Stimulus Frequency on Skeletal Muscle Contraction Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. During a single twitch of a skeletal muscle You correctly answered: b. maximal force is never achieved. 2. When a skeletal muscle is repetitively stimulated, twitches can overlap each other and result in a stronger muscle contraction than a stand-alone twitch. This phenomenon is known as You correctly answered: c. wave summation. 3. Wave summation is achieved by You correctly answered: a. increasing the stimulus frequency (the rate of stimulus delivery to the muscle). 4. Wave summation increases the force produced in the muscle. Another way to increase the force produced by a muscle is to You correctly answered: d. increase the number of activated motor units.…

    • 1052 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Organizational Behavior

    • 1603 Words
    • 7 Pages

    Save the document as a .doc (not a .docx), include your last name in the new file name, and submit the…

    • 1603 Words
    • 7 Pages
    Good Essays
  • Satisfactory Essays

    PhysioEx Exercise 1

    • 435 Words
    • 2 Pages

    Exercise 1: Cell Transport Mechanisms and Permeability: Activity 1: Simulating Dialysis (Simple Diffusion) Lab Report…

    • 435 Words
    • 2 Pages
    Satisfactory Essays