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Skeletal Muscle Contraction and Sliding Filament Theory Quiz
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Skeletal Muscle Contraction and Sliding Filament Theory Quiz

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Questions and Answers

What type of muscle contraction involves the muscle shortening as it creates tension?

  • Concentric (correct)
  • Type I
  • Isometric
  • Eccentric
  • Which type of muscle fiber has a primary energy system of oxidative and is recruited during lower intensity activities lasting 2 minutes or more?

  • Type Ila
  • Type IIx
  • Type llx
  • Type I (correct)
  • In the sliding filament theory, what molecule binds to troponin causing tropomyosin to move away from the myosin binding sites on actin?

  • Calcium (correct)
  • Magnesium
  • Potassium
  • Sodium
  • What type of muscle fiber has a white color, fast contraction speed, and is recruited during high to very high-intensity activities lasting 1-10 seconds?

    <p>Type llx</p> Signup and view all the answers

    Which type of muscle contraction involves the muscle length not changing, as the contractile force equals the resistive force?

    <p>Isometric</p> Signup and view all the answers

    What is the main reason ATP is crucial in muscle contraction according to the provided text?

    <p>To allow the process of muscle contraction to repeat</p> Signup and view all the answers

    Which directional term refers to a position in a limb that is nearer to the point of attachment or trunk?

    <p>Proximal</p> Signup and view all the answers

    What directional term indicates a position in a limb that is farther from the point of attachment or trunk?

    <p>Distal</p> Signup and view all the answers

    Which term describes the movement that involves bending a joint and decreasing the angle between two body parts?

    <p>Flexion</p> Signup and view all the answers

    When a body part is moved backward, which plane of movement is primarily involved?

    <p>Frontal Plane</p> Signup and view all the answers

    Which term refers to the middle direction toward the middle of the body?

    <p>Medial</p> Signup and view all the answers

    What type of movement involves bending the foot downward at the ankle joint?

    <p>Plantar flexion</p> Signup and view all the answers

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