Cardiovascular system - cardiac cycle Flashcards
1
Q
Atrial Diastole
A
All heart muscle in relaxation
All heart valves closed
Blood returning to atria
2
Q
Atrial Systole
A
Atria contraction
AV valves in contraction
Blood to ventricles
3
Q
Ventricular Systole
A
Ventricles in contraction
Semilunar valves open
Blood passing to arteries
4
Q
Ventricular Diastole
A
All heart muscle in relaxation
All valves closed
Blood returning to atria