Excitation-Contraction Coupling in Skeletal Muscle
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Questions and Answers

Which molecules are responsible for generating force in all three muscle types?

  • Action potential and muscle cell membrane
  • Actin and myosin (correct)
  • Ca2+ and ATP
  • Sarcoplasmic reticulum and sarcoplasm

    • What does the term 'excitation-contraction coupling' refer to in skeletal muscles?

  • The release of Ca2+ from the sarcoplasmic reticulum (correct)
  • The generation of an action potential
  • The interaction of actin and myosin molecules
  • The contraction of the muscle

    • What is required for the process of generating force in all three muscle types?

  • Release of Ca2+ from the sarcoplasmic reticulum
  • Generation of an action potential
  • Interaction of actin and myosin molecules
  • Elevation of intracellular Ca2+ concentration and ATP (correct)

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