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

Options

A. Greater the stroke volume greater is the heart rate
B. Greater the initial length of the cardiac muscle fibre, more is the force of contraction of heart
C. Greater the minute volume, greater is the heart rate
D. Lesser the length of cardiac muscle fibre greater is the force of contraction of heart

Answer

B

Explanation

Frank starling Law – The increase in strength of contraction as a result of stretching the walls of ventricle is known as starling’s law of heart.