Which is a true statement about the affect of the Frank-Starling law on the heart?
A) Increased diastolic stretching of myocardial fibers produces increased stroke volume.
B) Sympathetic activation leads to increased myocardial contractility and heart rate.
C) An increase in heart chamber diameter increases myocardial wall tension.
D) An increase in coronary artery diameter results in less rapid coronary blood flow.

Question

Quizplus · Accepted Answer

The Frank-Starling law states that an increase in resting muscle fiber length results in a greater development of muscle tension that produces increased stroke volume.An increase in preload result in a greater force of contraction according to the Frank-Starling law.The Frank-Starling law does not state that an increase in heart chamber diameter will increase myocardial wall tension.According to the Frank-Starling law,increasing the coronary artery diameter does not create a decrease in coronary blood flow.

Which Is a True Statement About the Affect of the Frank-Starling