"Review sheet exercise 2 skeletal muscle physiology answer" Essays and Research Papers

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    REVIEW SHEET EXERCISE 2 Skeletal Muscle Physiology NAME: LAB TIME/DATE:9pm.. 4.8.11 Electrical Stimulation 1. Name each phase of a typical muscle twitch‚ and‚ on the following line‚ describe what is happening in each phase. a. Latent-stage from rest to muscle tension begins b. Contraction-At this stage the muscle reaches its peak in contraction c. Relaxation- muscle is shortened‚ returns to zero and back initial length. 2. In Activity 2‚ how long was the latent period? ___2

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    EXERCISE 2: Skeletal Muscle Physiology Student Name: Student ID#: 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

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    REVIEW SHEET EXERCISE 2 Skeletal Muscle Physiology NAME: Jasmine Young LAB TIME/DATE: 1. Define each of the following terms: • motor unit - A motor unit consists of a motor neuron and all of the muscle fibers it innervates. • twitch - Skeletal Muscle twitch is the mechanical response to a single action potential. It has three phases known as the latent‚ contraction‚ and relaxation phase. • threshold - the threshold is the minimal stimulus needed to cause a depolarization of the muscle plasma membrane

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    Exercise 2 Skeletal Muscle

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    Anatomy and Organization of Skeletal Muscle and Muscle Physiology Lab 9 Skeleton Muscle Physiology: Computer Simulation Exercise 16B - Page PEx-23 Activity Sheet Objectives: • Use a simulation of skeletal muscle experiments to investigate threshold stimulus‚ maximal stimulus‚ multiple motor unit summation‚ wave summation and tetanus and the graded contraction. • Develop and test hypotheses related to muscle contraction. •

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    Skeletal Muscle Physiology

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    S 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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    I have only listed the questions that required answers that are a part of this 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 clear the tracings on the screen at any time by clicking Clear Tracings.) Record your data here: Stimulus Latent voltage:

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    Skeletal Muscle Physiology Activity 1 1. Skeletal muscle fiber- long‚ cylindrical cell with multiple oval nuclei arranged just beneath the sarcolemma Motor unit- all of the muscle cells controlled by a single motor neuron Skeletal muscle twitch- a single stimulus-contraction-relaxation cycle in a skeletal muscle Electrical stimulus- uses an electrical current to cause a single muscle or a group of muscles to contract Latent period- the time between the stimulation of a muscle and the start

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    Unit 2: Physiology Lab Skeletal Muscle Physiology Student Name: Lab Summary Worksheet Directions: Read the following directions before starting the lab. Before starting each lab Activity‚ read the Overview and Introduction. This information will help you understand what you are doing in the lab. You do not have to pdf your lab – the only thing that you will submit for grading is this lab report. You will have to answer the Stop and Think Questions that are embedded in the lab instructions

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    types of muscle skeletal which are voluntary‚ smooth muscle which are involuntary and cardiac muscle. Muscle is made up of protein filaments‚ myosin and actin. These filaments slide past each other to produce a contraction which changes both the length and shape of the cell. The primary function of the muscle is to produce both movement and force. Skeletal muscle is composed of bundles of muscle fibres containing myofibrils of thick and thin filaments (myosin and actin). Skeletal muscle have distinct

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    Great job once again on answering the question about how muscle action relates to the movement. I think maybe I took it to the extreme‚ I went on about agonist‚ synergist‚ and antagonist muscles. I wasn ’t sure if I should add the levers too. It appears as though you explained every type of muscle movement and gave an example of each. I went into flexion at the elbow and discussed that the agonist is the main muscle mover‚ the antagonist does the opposite‚ and the synergist is the helper. However

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