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Vickys05 Vickys05
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13 years ago
1.   In this simulation, when you delivered several single stimuli very rapidly, you saw a double peak.  The second peak is called an ______________.

2.   True or False:  In order for the heart to function the most effectively in pumping blood, the ventricles must contract and then relax fully with each beat.
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13 years ago
I would need more info, to answer your first question.  I'm not sure what the stimulation was, if it reached threshold, if it was a graded potential, etc...  If you tell me a little bit about the experiment, I can help you. 

For the second question, you need to know that the heart does need to properly relax between beats, in order to function correctly.  Diastolic Heart Failure is one of the disorders that can arise when the heart is not relaxing properly, between beats.  Hope that helps!
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