Lec 11 - Cardiac Cycle Flashcards
ventricular filling
diastolic
ventricular emptying
systolic
diastole has this blood volume after filling
140 mL
systole has this blood volume after emptying
70 mL
during systole there is an increase in blank tension
active
closure of av (mitral) valve
1st sound
closure of semilunar valve (aortic)
2nd sound
valves open and close blank
passively
valves open blank
silently
ejection fraction =
sv / end diastolic volume
waves during diastole
pq
waves during systole
st
wave that is atrial stystole between q and s wave
r
electrical activation of heart order
sa, av, bundle of his, bundle branches, purkinje fibers
pressure begins rising at blank wave
R
when blank pressure is higher than blank pressure, ejection of the heart occurs
ventricular, atrial
the slowing of ventricular filling
diastasis
four phases of ventricular cardiac cycle
- filling of ventricle
- isovolumetric contraction
- ejection of stroke volume
- isovolumetric relaxation