Wiggers Diagram/ Cardiac Cycle
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what occurs at "A" on the graph?
aortic semilunar valve opens
what occurs at the circled label "4" on the graph?
isovolumetric contraction
what does the circle label "5" indicate on the graph?
peak systolic pressure
What occurs at "B" on the graph?
semilunar valve closes
What occurs at the area labeled "D" on the graph?
both AV valves open and diastolic refilling beings
Put these phases of the cardiac cycle in the correct order. 1. opening of the semilunar valves 2. isovolumic contraction 3. beginning of atrial systole 4. closure of the AV valves 5. completion of ventricular filling 6. beginning of ventricular systole 7. ventricular relaxation 8. ventricular ejection
3,5,6,4,2,1,8,7
