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vole. There it 15 asing. Blow How is increased by pumping the heart at a higher rate in case 2. How did the Q-T antervals (which closely comespind so the duration of ventricular contraction) differ when comparing seated data with pon-excise data? Explain the physiological basis of this de of heart rate your exercise neds to elevate pumpier through our sy stole The is pressed in Cas bop This is normal at Ot scuted posten the boat is pumping bleed of real role After me event elle vapious pumping, dumbo of adjuder stole will be repeateelly. QRS Complex will then be chartered compared to resting position PART II. Putting It All Together A. Review Questions Amwer the following questions using your locus, youe sebook or your lah notes How can an electrocardiogram recond the heart's dectrical activity when the electrodes are placed 2 Fibrillation in coordinated contraction of cardiac muscle Which type of fibrillation is a more serious problem atrial or ventricular? Why? 468 UNIT 21 Py