Predict the effect on the ventricles if the AV node delay was shorter than normal
What will be an ideal response?
Ventricles would not have the opportunity to fill with blood before contraction if the AV node delay was shorter than normal. The action potential may flow backward from the AV bundle into the AV node and atria as well. AV node delay is the time it takes for the action potential to spread from the SA node to the AV bundle. This time delay allows the atria an opportunity to depolarize and contract before the ventricles, giving the ventricles time to fill with blood. The AV node delay also prevents current from flowing backward from the AV bundle into the AV node and atria.
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Fill in the blank(s) with the appropriate word(s).
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What will be an ideal response