cardiac cycle Flashcards
1
Q
atrial systole
A
- atria contract
- atria pressure higher than ventricle pressure
- atrio ventricular valves open
- blood flow atria to ventricles
2
Q
atrial systole
A
- atria contract
- atria pressure higher than ventricle pressure
- atrio ventricular valves open
- blood flow atria to ventricles
3
Q
ventricular systole
A
- ventricles contract
- ventricle pressure higher than atria pressure
- atrio ventricular valves close
- due to higher pressure semi lunar valves open
- blood flow ventricle to arteries
4
Q
diastole
A
- ventricles relax
- ventricle pressure lower than atria pressure
- semi lunar valves close
- blood in veins returns back to heart
- ventricular pressure lower than atria pressure
- atrio ventricular valves reopen
- blood from atria to ventricles
5
Q
valves
A
- prevent back flow of the blood
- close under high pressure
6
Q
ventricular systole
A
- ventricles contact
- ventricle pressure higher than atria pressure
- atrio ventricular valves close
- due to higher pressure semi lunar valves open
- blood flow ventricle to arteries
7
Q
diastole
A
- ventricles relax
- ventricle lower pressure than artery
- semi lunar valves close
- blood in veins returns back to heart
- ventricular pressure lower than atria pressure atrio ventricular valves re open
- blood from atria to ventricles
