Stages of Cardiac Cycle
- Created by: tomyellow
- Created on: 03-07-17 17:46
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- stages of cardio cycle
- ventricular diastole, atrial systole
- Ventricles are relaxed, decreasing volume of chambers + increasing pressure inside chambers.
- this pushes blood into the ventricles
- slight increase in chamber pressure + volume as ventricles receive ejected blood from contracting atria
- this pushes blood into the ventricles
- Ventricles are relaxed, decreasing volume of chambers + increasing pressure inside chambers.
- Ventricular systole, atrial diastole
- atria relax
- ventricles contract
- decrease volume and increasing pressure
- pressure higher in ventricles than atria , aorta and pulmonary artery
- forces AV shut, and SL valves open
- cardiac diastole
- both ventricles and atria relax
- pressure in pulmonary artery and aorta closes SL
- atria fills cos pressure in Vena Cava and Pulmonary Vein
- this increases atrial pressure
- as ventricles relax , their pressure falls below atrial pressure
- AV valve opens
- allows passive flow
- AV valve opens
- ventricular diastole, atrial systole
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