If the amount of blood returning to the left ventricle of a healthy heart increases slightly, according to Starling's law of the heart, what will occur?

Question

Quizplus · Accepted Answer

According to Starling's law of the heart, an increase in preload (the amount of blood returning to the heart) will result in an increase in contractility (the force of myocardial contraction). Therefore, in a healthy heart, if the amount of blood returning to the left ventricle increases slightly, contractility will increase to maintain cardiac output.

If the Amount of Blood Returning to the Left Ventricle