What is described by the Frank-Starling law of the heart?Multiple ChoiceThat the SA node will act as the pacemakerThat the quantity of blood that enters the heart equals the quantity that is pumped outThat cardiac output is equal to heart rate times stroke volumeThat blood will only flow through the coronary circulation during diastole

Which of the following is said to the be the pacemaker of the heart:The atrioventricular nodeThe semilunar nodeThe sinoatrial nodeThe Purkinje fibres

Why does the SA node act as the hearts natural pacemaker?It contains the pacemaker cells with the leakiest membranesIt is the end of the heart's conduction system

What is the normal pacemaker of the heart?Multiple ChoicePurkinje fibersSinoatrial nodeAtrioventricular nodeAV bundle

The “pacemaker” of the heart is theGroup of answer choicesright bundle branch.SA node.AV node.left bundle branch.

According to the Frank-Starling law of the heart, which of the followingstatements accurately describes the relationship between EDV and strokevolume?A) EDV has no effect on stroke volume.B) As EDV increases, stroke volume decreases.C) There is an inverse relationship between EDV and stroke volume.D) An increase in EDV leads to an increase in stroke volume