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Cardiac Subspecialty Certification (CSC) Exam

Category - Free CSC Practice Test Questions

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What is the normal polarity of a myocardial cell during the resting period, which causes the electrical potential in for the cell?

  1. Positively charged
  2. Negatively charged
  3. Outside the cell membrane is negatively charged, inside is positively charged
  4. Inside the cell membrane is negatively charged, outside is positively charged
Explanation

Answer: C - The normal polarity of a myocardial cell during the resting period, which causes the electrical potential in the cell, is for the outside of the cell membrane to be negatively charged, and the inside to be positively charged. This has brought about the term “polarized cell” for a normal resting myocardial cell.

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