A. Consider the way that muscle is stimulated to move and the way that the heart is stimulated to move. Based on the positions of the electrodes, what might some challenges be to measuring ECG signals during exercise?
B. What is ventricular fibrillation, and how would that affect the delivery of blood to the body?
C. What is atrial fibrillation and how would that affect the delivery of blood to the body?
D. What is a P wave?
E. When do the ventricles contract on a normal ECG reading?