preload afterload Flashcards
1
Q
What is preload
A
the initial stretching of the cardiac myocytes (muscle cells) prior to contraction. It is related to ventricular filling
2
Q
What is afterload
A
the amount of pressure that the heart needs to exert to eject the blood during ventricular contraction.
3
Q
What is stroke volume
A
volume of blood pumped out of the left ventricle of the heart during each systolic cardiac contraction
SV= EDV-ESV
EDV = end-diastolic volume
ESV = end-systolic volume
