Test Your Knowledge of Heart Rate and Its Effects on the Body with Our Quiz!
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Questions and Answers

What is the average heart rate per minute?

  • 100 beats/minute
  • 120 beats/minute
  • 72 beats/minute (correct)
  • 60 beats/minute

    • What is the effect of tachycardia on inotropy?

  • It decreases the heart rate
  • It exerts a positive inotropic effect (correct)
  • It has no effect on inotropy
  • It exerts a negative inotropic effect

    • What is the mechanism of action for increased heart rate?

  • Decreases the intracellular Ca+2 content
  • Binds the contractile proteins (troponin C)
  • Increases the intracellular Ca+2 content which bind the contractile proteins (troponin C) (correct)
  • Has no effect on the force of contraction

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