★ Biomedical Quiz
Which of the following instrument is used for recording the electrical activity of the muscles?
A. a) ECG
B. b) EMG
C. c) PCG
D. d) EEG
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What is the value of the refractory period from the previously identified QRS complex?
A. a) 200 ms
B. b) 198 ms
C. c) 192 ms
D. d) 215 ms
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