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Test Your Knowledge on the Anatomy and Function of Purkinje Fibers in the Heart
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Test Your Knowledge on the Anatomy and Function of Purkinje Fibers in the Heart

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Questions and Answers

What is the subendocardial conducting network of myofibers at the apex of the heart called?

  • Endocardial fibers
  • Subendocardial fibers
  • Myocardial fibers
  • Purkinje fibers (correct)

    • What distinguishes Purkinje fibers from adjacent contractile muscle fibers in the heart?

  • They are smaller in size
  • They contain more myofibrils
  • They have less glycogen
  • They are pale-staining (correct)

    • What is the function of Purkinje fibers in the heart?

  • To trigger waves of contraction through both ventricles simultaneously (correct)
  • To provide structural support to the heart
  • To regulate blood pressure
  • To secrete hormones into the bloodstream

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