Muscle Fascicles and Membrane Potentials Quiz
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Questions and Answers

Which of the following is the primary energy source for muscle contraction?

  • Anaerobic respiration
  • Aerobic respiration
  • Phosphocreatine
  • ATP (correct)
  • What is the primary function of the Z discs in muscle contraction?

  • Producing action potential
  • Anchoring the thin filaments (correct)
  • Spontaneous depolarization
  • Transmission of motor nerve impulses
  • In skeletal muscle, what membrane potential is required to produce an action potential?

  • -40mV
  • -60mV
  • -70mV
  • -55mV (correct)
  • Which type of muscle cells are capable of spontaneous depolarization?

    <p>Cardiac muscle</p> Signup and view all the answers

    How is a graded whole skeletal muscle contraction produced in vivo?

    <p>Both of these</p> Signup and view all the answers

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