Which of the following statements is related to Starling's law of heart?

• Greater the stroke volume greater is the heart rate

• Greater the initial length of the cardiac muscle fibre, more is the force of contraction of hear

• Greater the minute volume, greater is the heart rate

• Lesser the length of cardiac muscle fibre greater is the force of contraction of heart

B.

Greater the initial length of the cardiac muscle fibre, more is the force of contraction of hear

Starling's law of heart states that the stroke volume of the heart increases in response to an increase in the volume of blood in the ventricles, before contraction, when all other factors remain constant.

Also, the increase in strength of contraction as a result of stretching the walls of ventricles is known as Starling's law of the heart.