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  • Heart Anatomy and Structure
  • Which of the following ions is not required for the contr...
Multiple choice

Which of the following ions is not required for the contraction of heart muscles?

  1. Na+ ion

  2. Ca+ ion

  3. K- ion

  4. Cl- ion

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cl- ions are not required for the contraction of heart muscles.

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