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PHYSIOLOGY 6-CARDIAC CYCLE - Coggle Diagram
PHYSIOLOGY 6-CARDIAC CYCLE
Atrial Systole
Atrial dep>>Atria contract(atrial kick in systole0
AV opened>passive ventricular filling
Atria & Ventricles>Diastole
ECG.>P Wave & PR interval
Changes in Loops
↑ Afterload>↑VP during IV contraction>less bloodleaves>↑ESV , ↓SV>Narrower & taller loop
↑contractility>↑ pressure>longer ejection LVP=AP>↑SV>↓ ER>Loop widens+
↑preload>>↑EDV>↑Contraction>↑ SV
Isovolumetric Ventricular Contraction
ECG-QRS complex
Semi lunar closed
VP>AP : Cause AV opening(S1)
Slow Ventricular Ejection
Ventricular depolarization
T-WAVE
↓ventricular ejection velocity>>↑ AP
Rapid Ventricular Ejection
vp>ap:aortic. EJECTED BLOOD , also ejected via Pulm valve
↑ AP>Atrial filling >>ECG:ST segment
VP<AP:AV valves open
Isovolumentric Ventricular Relaxation
ALL valves closed
Ventricular Repolarization
=dicrotic notch=AP curve
T WAVE Ends
Relaxed ventricles>>VP<AP=Aortic valve close
Rapid Ventricular Filling
Passive ventricular filling>(relaxed&compliant)
S3(Children)>rapid filling
Ventricular diastole;VP<AO=AV valves open
Pressure Volume Loops
4 phases:V.Filling ,IV contraction,Ventricu;a ejection,IS Relaxation
Present>Pressure, volumr e and Changes in LV/HB
Slow Ventricular filling
relaxed ,ventricular diastole