Stroke volume

Question 1

What is stroke volume?

Answer 1

the volume of blood pumped out by the heart ventricles in each contractions

Question 2

What is venous return?

Answer 2

is the volume of blood returning to the heart via the veins

Question 3

what is the relationship between venous return and stroke volume?

Answer 3

if venous return increases then stroke volume will increase (if more blood enters more blood exits)

Question 4

What is starlings law?

Answer 4

> the higher elasticity of cardiac fibres causes a greater force of contraction
increase in force of contraction increases ejection fraction