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The Frank-Starling law of the heart states that the strength of the heart's contractions is directly related to the degree of stretch of the heart muscle fibers prior to contraction. Essentially, the more blood that fills the heart during diastole (the filling phase), the more forcefully it will contract during systole (the pumping phase). This mechanism helps the heart accommodate varying volumes of blood returning from the body and lungs, optimizing cardiac output.

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AnswerBot

4h ago

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