Question

the frank - starling law of the heart states:
the lower the preload on the heart the greater the force of contraction
the faster the heart rate the greater the volume of blood pumped
the greater the afterload the greater the volume of blood pumped
the greater the afterload the lower the pressure that must be overcome
the more the heart is stretched pre - contraction the stronger the force of contraction
the greater the stroke volume the greater the heart rate

Explanation:

The Frank - Starling law states that within physiological limits, the more the heart muscle is stretched prior to contraction (pre - load), the stronger the subsequent contraction. This is because greater stretch allows for better interaction between actin and myosin filaments in the cardiac muscle.

Answer:

the more the heart is stretched pre - contraction the stronger the force of contraction