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1. The cardiac cycle consists of a distinct relaxation and contraction phase. Which term is typically used to refer ventricular contraction while no blood is being ejected?
 
 
 
 

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2. Most blood enters the ventricle during ________.
 
 
 
 

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3. The first heart sound represents which portion of the cardiac cycle?
 
 
 
 

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4. Ventricular relaxation immediately follows ________.
 
 
 
 

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5. Critical Thinking: Describe one cardiac cycle, beginning with both atria and ventricles relaxed.

Question 5 of 5