QuestionSBA
QuestionChoice
Increased skeletal pump activity increases venous return to the heart and causes ventricular myocytes to stretch to accommodate more blood. This allows the heart to generate a more forceful contraction
10026846
a
Increased skeletal pump activity
QuestionChoice
Tachyarrhythmias reduce the time for filling and, therefore, reduce preload and myocyte stretch
10026849
d
Tachyarrhythmias
QuestionChoice
Atrial arrhythmias impair the amount of blood entering the ventricles and, therefore, reduce preload
10026850
e
Atrial arrhythmias
QuestionChoice
Hypovolaemia leads to a decreased venous return to the heart which reduces ventricular myocyte stretch, therefore the force of contraction would be less
10026847
b
Hypovolaemia
QuestionChoice
Restrictive cardiomyopathy would prevent myocytes from stretching and, therefore, reduces their force of contraction and stroke volume of the left ventricle
10026848
c
Restrictive cardiomyopathy
Concept
Chapter
2693
5927
Frank-Starling
Topic
159
Cardiovascular physiology
17767
According to Frank-Starling law, which of the following will increase the stroke volume of the left ventricle?
a