Muscle Twitch Summation Quiz
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Questions and Answers

What is the phenomenon called when the strength of contraction of a muscle increases to a plateau?

  • Contraction failure effect or slump
  • Plateau effect or steppe
  • Staircase effect or treppe (correct)
  • Muscle twitch effect or spasm
  • What is believed to be the primary cause of the staircase effect?

  • Increasing sodium ions in the cytosol
  • Decreasing calcium ions in the cytosol
  • Decreasing sodium ions in the cytosol
  • Increasing calcium ions in the cytosol (correct)
  • What is the initial strength of contraction of a muscle after a long period of rest compared to its strength 10 to 50 muscle twitches later?

  • Double
  • Triple
  • Half (correct)
  • Same
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    Description

    Test your knowledge on the phenomenon where the strength of a muscle's contraction increases to a plateau. Explore the primary cause of the staircase effect and understand how the initial strength of contraction compares to later contractions after multiple twitches.

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