The Frank-Starling curve for heart muscle is analagous to a length-tension curve in skeletal muscle.

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The Frank-Starling curve describes the relationship between preload (the degree of stretch of the heart muscle before contraction) and stroke volume (the amount of blood ejected from the heart per beat). Similarly, the length-tension curve describes the relationship between the length of a skeletal muscle fiber and its maximum tension generation capacity. Both curves show that increasing the degree of muscle stretch (preload or muscle length) results in an increase in muscle force or contractility. Therefore, the Frank-Starling curve and length-tension curve are analogous in that they both describe how the force generated by a muscle (heart or skeletal) is influenced by the degree of muscle stretch.

The Frank-Starling Curve for Heart Muscle Is Analagous to a Length-Tension