Adult 3 Final Exam Study Guide
preload - degree of stretch (volume of blood) of the ventricular muscle fibers at the end of diastole (when filling volume is the greatest). the higher this is the stronger the contraction preload - increased by blood transfusions, IV fluids, hypervolemia, regurgitation preload - decreased by hemorrhage, diuresis, dehydration, vasodilation afterload - resistance to ejection of blood from the ventricles afterload - increased by htn and vasoconstriction afterload - decreased by nitroglycerin contractility - force generated by contracting myocardium contractility - increased by catecholamines
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Wayne State University
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BIO 2870
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- adult 3
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adult 3 final exam study guide