Poll Everywhere lets your audience respond using text messages (SMS), Twitter, or the web in real-time. The best part is you can embed live audience responses and live charts right inside your Microsoft PowerPoint presentation, free!

Which of the following statements regarding cardiac muscle is true?

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  • Dense bodies anchor thin filaments.
  • Fibers lack I and A bands.
  • Intercalated discs contain gap junctions.
  • Fibers lack branches.
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