Which law states that “The greater the initial length of the cardiac muscle fiber, the stronger the myocardium contraction”.

Correct option is C

Starling’s Law of the Heart, also known as the Frank-Starling mechanism, states that the greater the initial length of the cardiac muscle fiber (or myocardial stretch), the stronger the subsequent contraction. This means that as the heart fills with more blood (increased venous return), the heart muscle fibers stretch more, leading to a stronger contraction to pump the blood out. This law helps the heart maintain a balance between the amount of blood returning to it and the amount of blood it pumps out (stroke volume).