3. Which of the following is not correct regarding a prepotential: it is a spontaneous depolarization...

3. Which of the following is not correct regarding a prepotential:

it is a spontaneous depolarization
it occurs as the result of the influx of Ca2+ via L-type channels
it is due to "funny" current
the # of prepotentials per minute = HR

4. What would happen if you injected a drug into the papillary muscle that caused it to relax during systole (ventricular contraction)?

blood would flow from the atria into the ventricles
the tension of the chordae tendineae would increase
the ventricles would relax
the seal of the AV valves would be compromised

Expert Solution

Sydney Mullin answered 1 year ago

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