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Frank-Starling Mechanism

The intrinsic mechanism by which the heart adjusts its stroke volume in response to changes in venous return and ventricular filling volume.
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The statement of the theorem

The intrinsic contractility of the myocardium, represented by the force of contraction FcontractF_{contract}, increases with the degree of ventricular stretch λ\lambda (related to EDVEDV), such that the resulting stroke volume SVSV satisfies: SV=f(λ)SV = f(\lambda) where ff is a monotonically increasing function.