Master the Mechanics of Muscle Contraction and Relaxation
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Questions and Answers

Which organelles are important in the skeletal muscle system?

  • Mitochondria
  • Myofibrils (correct)
  • Lysosomes
  • Golgi Apparatus

    • What are the two types of filaments involved in muscle contraction?

  • Hemoglobin and Myoglobin
  • Actin and Myosin (correct)
  • Tropomyosin and Troponin
  • Keratin and Collagen

    • What is muscle relaxation?

  • The termination of muscle contraction
  • The return of muscle fibers to their low tension-generating state (correct)
  • The activation of tension-generating sites within muscle cells
  • The production of muscle tension without changes in muscle length

    • How is a muscle contraction described if the muscle tension changes but the muscle length remains constant?

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

    What does muscle contraction refer to in physiology?

    <p>Activation of tension-generating sites within muscle cells</p> Signup and view all the answers

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