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NCAT - Practice Test - Biology - Circulatory System Quiz

Attempt 10 MCQs on NCAT - Practice Test - Biology - Circulatory System | Quiz 3

21. What are the two main phases of the cardiac cycle?



22. Which phase follows atrial systole and increases ventricular pressure?



23. What causes the "lub" sound?



24. What causes the "dub" sound?



25. Which phase occurs immediately after AV valve closure, before semilunar valves open?



26. Which phase occurs after the second heart sound?



27. Which phase actively pumps blood into the ventricles?



28. What is the volume of blood ejected per beat called?



29. What is the formula for cardiac output?



30. What is the fraction of blood pumped out of the ventricle called?



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Instructions: Select one answer per question. After submitting, you will see your score, correct answers, and explanations.

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