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Ejection fraction: Quiz

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Question 1: In cardiovascular physiology, ejection fraction (Ef) is the fraction of ________ pumped out of a ventricle with each heart beat.
PlateletBloodBlood plasmaRed blood cell

Question 2: Damage to the muscle of the heart (myocardium), such as that sustained during myocardial infarction or in ________, impairs the heart's ability to eject blood and therefore reduces ejection fraction.
CardiomyopathyHypertrophic cardiomyopathyMyocarditisHeart failure

Question 3: Ejection fraction is commonly measured by echocardiography, in which the volumes of the heart's chambers are measured during the ________.
Cardiac action potentialCardiac cycleCirculatory systemSystole (medicine)

Question 4: This reduction in the ejection fraction can manifest itself clinically as ________.
Heart failureHypertrophic cardiomyopathyAtrial fibrillationMyocardial infarction







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