Question: 4. The three main physiologic factors affecting Stroke volume(SV) are; preload, contractility, and afterload. Explain howpreload, contractility, and afterload affect End diastolic volume (EDV), Stroke

4. The three main physiologic factors affecting Stroke volume(SV) are; preload, contractility, and afterload. Explain how“preload”, contractility, and “afterload” affect End diastolic volume (EDV), Stroke volume (SV), and thus Cardiac output (CO).

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