Q:

When heart rate is 75 bpm, the duration of absolute refractory period of cardiac muscle is normally approximately

0

When heart rate is 75 bpm, the duration ofabsolute refractory period of cardiac muscle isnormally approximately:


  1. 50 ms
  2. 100 ms
  3. 200 ms
  4. 300 ms

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C. 200 ms

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